First of all, the TL;DR of this review is that I found the whole set to be good but not great. Depending on your height you will have a lot of difficulty finding full range of motion especially with the leg press, extension, and leg curl. The quality of the machine is overall good and I would recommend it ONLY for absolute beginners, people shorter than 5'8", and people not weighing more than 350lb for safety.
Let me start by saying that I am about 5'6", 180lb, and I have very limited experience with working out. I am still a novice at workouts but I know what "feels" right when performing an exercise. So, please keep that in mind when I describe my limitations in this review.
Moving on to the shipment and building process. All four boxes arrived at the same time days earlier than what I was originally expecting them to come. The boxes were a little beat up but all the parts inside were seemingly none the worse for wear. I built this whole set over the course of two nights for a combined total of 6hrs including the time it took to add lubrication to pulley wires and joints for best movement. I built it by myself with my own tools and I would recommend that if you were to build this to have a friend help you when attaching the top bar. The instructions provided with the set are straightforward and the pictures are better than the written instructions especially when it came time to set up the pulley wires. Initially I one of the pulleys one peg too low which cause the whole resistance to be off but once I raised it I had optimal resistance. But what about using the set?
Beginning at the top, the lateral pull down was too short for even me. I did not use a chain like you may see on the product images above because even just hooked straight onto the cable the lateral pulldown bar provided no resistance at the top which forced me to lean a little more back than I normally need to when using commercial gym lat pull down machines. Using the provided adjustable hand grip attachments I was able to get a very good feeling triceps pull down, face pulls, and triceps extension exercises from the machine with just low weights.
Next the chest press, flys, and rows. The chest exercises were about just right. I had to raise the seat two the second hole to be able to exercise my chest rather than my shoulders when doing chest presses and flys although once again I felt that tension was being released too early before I even had the arms pulled back to resting position. One of my major complaints about the whole set is that the seat is not adjustable forward or backwards which I felt could have resolve a large part of my range of motion issues I experienced. Such as when I tried doing upper seated rows but could perform them well because the only way I could keep enough distance to let my arms extend to stretch my back muscles was to sit way back almost on the leg cushions.
Next are the lower body sections of the set. I was really excited to use this particular set because of the leg press, extension, and curl parts of the machine. Unfortunately, this is the part that let me down the most. When you see the pictures of these fine gentlemen demonstrating the leg press attachment on many of the machines you see on this sight you may notice that their legs look almost completely extended while at rest. It's because they are. I found that if I sat normally in the seat my legs would be 3/5ths of the way extended out before even pressing which only provided at most a half rep of what could be considered a good leg press. I needed to scooch myself down to where most of my lower back was on the bottom part of the seat to be in the correct position to perform a full range of motion leg press with tension remaining in the hamstrings, quads, and glutes. Furthermore, to my shock, I felt that the 160lb limit was too light to use the leg press for anything other than high rep sets. The leg extension was almost fine but I still needed to sit up further in the seat, my back off of the back rest, to have my legs keep tension for more than half the movement. The leg curls were a nightmare to adjust to. I needed to lean on the handle bars, push back with the leg that was going to perform the exercise with but plant the other leg much more forward to brace myself to perform the movement without the leg cushion rolling under my shoe at the bottom and top of the movement.
Lastly are the bottom attachments. The rows may have been the most straightforward exercise of the whole set and I have the least to say as it worked just fine. However, using the same lower cable to perform a bicep curl and modified RDL were not as uneventful. At just 70lb of selected resistance I was lifting up the entire front end of the set when performing curls and a modified RDL lift using the lateral pulldown bar. I used a weighted vest in the seat to help reduce the amount it was lifted but I still felt the need to stand directly on the bar slightly to keep the set steady while using the lower attachment when performing these exercises.
As you may have gathered from this review so far, I was not overall satisfied with my purchase and I decided to return this set. I was very nervous about completing this return and after only using it for nearly 3 weeks I considered if it was worth returning due to the size, complexity of disassembly, and repackaging. Thankfully, I was able to reach out to the seller of this particular set and this is where the 5 star review comes in. I used amazon's message seller feature and within an hour was in contact with the seller who was empathetic to the struggle that I faced with their product. I am happy to say that through discussing with them my dilemma I was able to be provided with a very satisfactory solution to complete my return and received a full refund without any issues.
I do fully believe that this gym set is of good quality, can provide good resistance and adequate exercise but with a few caveats. I do not believe that any over the height of 5'8" or over the weight of 350lbs would be able to use this set without having worse range of motion issues. I believe that if you are considering this set you must be aware that this set will work better if you plan to use it for high reps (15-30), high sets (5+), at lower weights (60%-80% of your working sets). Mixing in a little bit of free weight exercises as well as some body weight exercises along with this machine can provide a decent workout routine for a good price value especially when this set is being sold on sale. If you are a brand new beginner with no experience at all this set can be a solid starting point but I encourage anyone looking for more resistance, heavier weights, or more strength training oriented plans to consider before buying this review.
So overall I would rate the quality of this set to be a pretty solid 4 stars for exercise equipment. For beginners this set could be what you need but for the more experienced or for people who want something more similar to what is available in commercial gyms I would say consider other options. Once again, I give this product a 5 star review only because of the wonderful customer service I was provided by the seller despite my issues with the set.
Respectfully,
An Amazon Bargain Hunter

The last box showed up three days earlier than supposed too. Assembly wasn’t terrible 2-1/2 hours or so. Everything works great, removed the chains to help fit my body, not perfect for someone tall. The only real complaint I have about this, is the plate covers on the sides, were made 1 inch or so too short, even stretching with two people, getting the screws started was a major pain. And couldn’t even get all the screws in in the end. Pretty great overall, hopeful to get some decent gains from home now.

First of all I must mention the assembly as I've seen a few different takes and I'll share mine. Putting this together takes time. If you've heard a time estimate from anyone under 4 hours I'd say to double it if you're on own unless you're some super high energy person who can blast through this kind of thing with no rest or someone like that. I've put together a ton of stuff in my day and I'm no slouch and suffer under no illusions, I just want to be real here according to my own experience. Unpacking it alone took over an hour.
In terms of putting it together there's nothing that complicated about the job, just that there are so many parts and steps. I did ask for help with the cabling system and that went faster with another set of hands on the job to help put together all the pulleys and to thread the cable, it's quite an elaborate setup and I recommend you get help for that, although not undoable on your own, it's just way more ideal to have someone around for that part.
Nothing was that hard, all parts fit and holes were drilled properly, it's just a lot of parts. I strongly urge you to have a socket set on hand for this project, although not required and the included tools will get the job done you will save yourself much work and time. What I did appreciate was the crystal clear labelling on the hardware packs and the video from the manufacturer that was so well made and easy to follow. Without the video on while building this it would have been a much harder task, seriously, watch the video and I wish more manufacturers went that route for their products.
The build quality and stability of this unit once assembled is high in my opinion, I feel safe and stable using it and everything works the way I expect it to. A variety of exercises can be performed on this and the provided attachments are enough to get you a very decent full body workout. There is a provided poster of the various moves that's helpful, but no video content for this particular model of anyone performing a workout, which isn't that big of a deal as there are loads from people with similar machines you can follow along with if you're learning. I'm happy to have this here at home now and use it 5 days a week. It actually inspires me to use it because I find it such a great fit for me and my needs personally.
The unit provides serious resistance so don't just look at the number of the poundage for the weight stack you have to keep in mind the amount of force and work you do to move the weight is applied differently due to the way the cable system works. For example my son, college athlete type, wasn't too impressed looking at the poundage and came to work out on this feeling very confident he'd be able to push the whole stack as he can do much more weight in the gym on the machines he uses. However when he went to attempt his normal weight he was humbled and had to move to only half the weight to do his set. That's hard to explain so I hope I was able to get the point across. What I'm saying is that due to the physical work and force requirements you're pushing/pulling more than you may think and the provided weight might be more than enough for you to work through, of course depending on your level of strength.
At the end of the day I'm just really appreciative of this Gym from SincMill and very happy to have it here as a part of my home gym. Especially for back day! I can't think of a single complaint but only one caveat, being that if you're a tall person you might not get the most out of your purchase. We're not a tall household here and this format is more ideal for us. Between 5' 2" and 5' 7" this form factor is our size so I'd say to keep that in mind. Not that it's unusable if you're taller, just that it might not be ideal for you if you are. This is a great gym for smaller spaces on the flip side of that caveat. Very well pleased with my purchase and I expect this unit to last for a good long while around here due to it's high quality manufacture.