Tolerance Rings are a low cost fast solution for joining cylindrical parts. These frictional fasteners assemle quickly and provide retention to securely mount bearings and other components inside a bore, while compensating for small amounts of misalignment and thermal expansion. No need for set scerws, adhesives, knurls, D shafts or nuts when used under recommended loading capacity, and you can employ broader machining tolerances for interference fits. Cut to fit outside a normal circumference, the free state diameter of the ring is open, so that when installed inside a bore the ring will conform and be self retaining. Each inward facing corrugated bump acts like a stiff, radical soring that compresses in proportion to torque of radial load, thereby allowing for a wider dimensional tolerance of mating diameters. Load capacities vary with the amount of interference fit and the radial spring design allows for infinite rotational indexing of parts prior to assembly. Made of Stainless Steel Type 301.