This review is to augment other excellent reviews found here. I will make two (minor) suggestions, one for the home user, and a second for the manufacturer (GMWD). BTW, I don't suggest overkill upgrades (e.g. ball bearings) when price is a factor. This machine came quickly, and arrived same day I was set for "leg" day. Needless to say, anxious to try it out.Please view photos for descriptions (better than my writing): 1(A). Assembly is super easy. Although it came with tools, I recommend a 17mm ratcheted wrench and a 17mm fixed wrench* (or adjustable wrench) as well as a 14mm wrench. *The included wrench works here. You also need a 4mm Allen wrench: The included 4mm Allen wrench is more than adequate. 1(B) I used masking tape to ensure centering of the bar (adding the 2" adapters first won't do this because there will still be excess room on one end). Photo 2(D) shows a cardboard damper, but I later added a thin, dense rubber square here to avoid metal-to-metal contact (this is 1 of 2 recommendations). This offers two advantages: 1) Longevity, and 2) the rubber (white cardboard shown) will also keep the vertical rest from swinging out too far.Photo 2(E) I like the 2" (DIA) weight adapters, as I'm more of a "plate" guy than rubber band person. The adapters (included) work with Olympic (2" hole) plates. You can also see the 4mm Allen head screws. Photo 3: My modest home gym. I used to compete in weightlifting (with one World Championship), but now stay at home for medical-personal reasons. Can't stop lifting, though! Note the GMWD calf machine fits nicely within the space of two rubber floor mats. 3(F) detail of pegs for rubber bands users.Photo 4(G): The bar-rest pivots in both directions. As a recommendation (to GMWD), it would be nice to extend the stop plate on the handle side so it's taller. This extension would prevent "overshoot" when returning handle/rest to its rest position. Sometimes you move this handle quickly, e.g. when your calves are about to cease up! The lip on the opposite side is a perfect height, making it easy to release the weights (for performing calf raises). Adding the rubber (as described above) limits how far the post can pivot, which helps some. These are minor suggestions, and this machine great bang for the buck = 5 stars. Customer help was also 5-star (thanks to GMWD Irene). I didn't have questions regarding this machine, but she helped when ordering GMWD's leg extension / hamstring curl machine. That hasn't arrived (yet), but looking forward to this addition to me gym. I'll take photos. Cheers! ELC