Adjustable adaptor for winding back brake caliper pistons. The rotating centre bezel adjusts both sides of the tool to correctly fit and wind back the brake caliper piston. Can be used as a 2 or 3 pin adaptor and compatible with all wind back tools that use a 3/8" drive. 3-pin side quickly adjusts from 20-30mm. 2-pin side quickly adjusts from 22-35mm.