The PlateMate Brick is designed specifically for selectorized - or stack weight - machines. Build strength steadily with 2????? and 5 lb increments instead of the typical 10 or 15 lb increases. When the workout's finished, your brick attaches securely to the framework of the machine, so it is always easy to find. Discover what the experts have known for a long time. Microloading - strength training with smaller incremental increases - is the smarter, better, and safer way to success. PlateMates make microloading easy at any professional or home gym with their revolutionary, patented superstrong magnetic design, three versatile styles - hex, ring, and brick - and micro increments from 5/8 lbs to 5 lbs. Microloading with PlateMates is essential at all levels. Beginners are apt to do exercises properly and avoid injury. Intermediates stay motivated because they experience steady progress. Advanced lifters benefit because microloading helps them break through "the plateau" to acheive success at the highest level of weight training. PlateMates are ideal for physical therapy where small increases help patients regain strength without overburdening injured muscles and tendons.