All US Handstrength recognized competitions that have the Two Hand Pinch as an event will use a recognized Two Hand Pinch device. The device is adjustable from a few mm's to over 64mm's. The most popular of which is 54mm, or about 2 1/8" thick. The athlete must lift the implement until the LOADING BAR AND NOT THE PLATES touches a set marker 16.5" high. There is NO front loading and NO back loading allowed in any US Handstrength recognized contest. So train accordingly. NO DROPS ALLOWED.