Ltpgtltspangtthese are a set of 2 specially designed clamps that attach either the beastie baseltspangtltspangtampnbspor the beastie bar standsltspangtltspangtampnbspto the rails the clamps slide freely up and down the rails to adjust the position of the massage tool and are locked in place with their thumbscrews you then lean against the massage tool to apply massage pressure to your bodyltspangtltpgtr ltpgtltspangtthe same clamps are used f