let me start off by saying looks might be deceiving i don't know yet ..purchased this 3 days ago and received it today so compared to other burning machines shipping time was fast, reason #1for me buying it all the others had like a moth delivery date and i wanted to strat working out now not in one month#2nd reason for buying this model it had a resistance lever and was the cheapest at about a bit over 100 as compared to 150+ form other models but i guess you get what you pay for ...reason #3 their was a lot of reviews that seem like a copy paste on different models with different names but the review was the same word for word so seemed kinda shady that multiple people bough different models from different sellers but had the seem thing to say word for word this one seem to be the most legit and even had a youtube video from the same company as the seller so seemed legitok now for the real reviewalready explained why i chose this model from TWSOULmy thoughts on it like i said i just received it today and after taking it out the box i noticed a few of the screws on the rotating wheels were loose almost half way out ( so i had to tighten them up )second thing i noticed was the resistance lever gets really loose the less resistance you have to the point were it feels like it might fall off it doesn't have a stopping point from what i can tell u can just loosen it up till i guess it does fall of and u cant loosen it no more3rd thing i noticed on the center on top of the resistance lever it had like some kind of dampening foam and i guess that's what causes the resistance almost like a bike brake it creates friction and makes the disk spins slower so more force has to be appliedthis just makes me thing that over time that will wear out and make it harder to add resistance and i feel that the only thing keeping them on is some hot glue since their was a lot of hot glue string residue on the equipmentand another thing the two dampening foam things seem to be miss cut since one disk spins easier then the other like if one side has more resistance being applied to it even if u increase the resistance one side has more than the other that's what makes me thing that those foam things are whats causing the resistance ...so yeah in my opinion knowing the craftsmanship of the equipment i wouldn't have paid 120 bucks for it the most i would pay is maybe $80.00but seeing as the other models that had the resistance function were about 160 - 180 and took a month to arrive and had like $15 shipping fee u can see why i got thisfunctionality well ive used it for a few min and yeah it does have a good amount of resistance available to the point were i do see myself making some progress by using it and getting some gains.i did feel the pump and the burn on my solders after like 1 min so that was goodso it does what it claims to do so far ...if ... and its a " BIG IF " if it last ... from the way it was made i dont know how long it will last hopefully it does but i dont know i definitely wouldn't go ham and just send it like they do in the video i fell that doing that would mess mess it upso my plan moving forward is to just to go slow and steady focuz on form and quality over speed use it more as a resistance equipment to gain strength in my arms and shoulders i think its called progressive overload or something rather than seeing how fast i can go unless after using it for a wile i feel that it will last maybe ill try to just go fast and hard but will see ill do an update if it dont give out on meI would recommend this machine either alongside or BEFORE threaded dumbbells/curling bar because its great for biceps and forearms.I buy a lot on Amazon as a Prime member. I don't usually post negative reviews but, with this TWSOUL resistance spinner, I had to get this out. Upon opening the box, I immediately reboxed it for a refund. See images. It was used and the chrome plating was seriously pitted. The product wasn't even wiped-down. The center plate with the adjustment knob had two dents in it. As for the spinning application, I tried it but the rotation was not smooth. It was binding enough for me to return it for that issue, alone. Take a GOOD look at the photos... you may get this one if you order it. BUYER BEWAREwow, I was start workout can feel my arm start burn very amazing it.I am in my 60s and this really works my heart. I bought the ten pounder. Works while watching TV. You use it by doing extended sets. I do four 50 rep sets. I like it.It works your forearms and shoulders well.Nice addition to the gym. Excellent cardio.Love the adjustment knob for changing the tension.Only wish is that the circles were slightly bigger it's a little small for my slightly larger than average hands.Otherwise, fantastic.It is same as when you see from those youtube. It is good to have the adjustable resistance so I can use different resistance with different exercise. The only problem is it has some smell, not sure if it is from the rubber or from the belt inside.Defective: one side is easier to move than the other one.