The Polycarbonate Clamping Collar (8mm REX™ Bore) - 4 Pack offers a lightweight and balanced solution for securing components on 8mm REX™ shafts and standoffs. Its design prevents marring and allows for direct installation against a bearing without binding. The two-piece construction facilitates easy adjustments deep within assemblies without disturbing other components. This pack contains four collars, each equipped with hex capture nuts for installation using a single tool.