Please see photos. See link http://www.fittech.com.au/ISO/ISO_21.html Australian made. Solid. Commercial quality. Adjustable tension for left/right side independently if desired (great if focus required more on one side because of injury/rehab). I keep tension the same both sides for a good workout. Works shoulders, biceps, triceps and core. From easy to move machine arms to extremely difficult depending on how you want to set it. To set you just turn the resistance dials, one for left and one for right. I have many pieces of gym equipment at home and wish to do a rearrange so I’ll be selling one or two. If you had this machine and a good stepper you’d be getting a very good overall body workout with both. Buyer must pick up. It’s heavy. Solid steel.