More informationSimultaneously pressing the pistons in the caliper with panels that move in parallel and symmetrically, the disc brake piston pusher is a useful tool that adjusts the caliper pistons when replacing brake pads.Material: 6061 Aluminum/Alloy Steel .Size: Ø23 x 121mm.Weight: 220g.Instructions for use:For top loading calipers: - Remove the brake pads, insert the tool in the caliper with the disc between the two panels.- Turn the handle clockwise to expand the panels and press the pistons back until they are flush with the caliper. For bottom loading clamps: - Separate the wheel before using the tool. Note:This tool is compatible with collets with an opening 23mm or wider.