Roller boot has a sole insert with a connected insert chamber for coupling hooks and couplings grip behind the insertion chamber

摘要

The roller boot (6) has a sole insert (14) with a connected insert chamber (15) for coupling hooks (7,8). Rear couplings (16) grip behind the insertion chamber and the coupling hooks are sprung and have locks (10). The coupling hooks also insert in an angled surface (19) and have a limited metal covering.