The 18pce Brake Piston Wind Back Tool Kit is a specialist hand tool set used to retract (wind back) caliper pistons when replacing brake pads or servicing disc brake systems. Its primary use is to compress or rotate the piston back into the caliper housing in a controlled manner, avoiding damage to piston faces, seals and caliper bores on single‑ and twin‑piston designs found on many modern vehicles.

Components are manufactured from hardened carbon/tool steel with a corrosion‑resistant zinc‑plated and black phosphate finish on contact parts to reduce rusting in workshop environments. The kit includes a threaded spindle with a hex head drive, a T‑bar handle and a 3/8in square drive adaptor so the spindle can be turned by hand or with a standard 3/8in ratchet. The spindle uses a metric coarse thread profile compatible with the majority of European and Japanese caliper screwback mechanisms. A range of adapting plates and pins are provided to engage different piston recesses and pad contact faces; the assortment covers single pistons, dual opposing pistons and various offset piston designs.

Typical applications include routine brake pad changes, caliper rebuilds and fleet maintenance. The kit is commonly used in independent garages, franchised dealerships, braking specialists, light commercial vehicle workshops and motorsport pit crews where quick, repeatable piston retraction is required. It is particularly suitable for passenger cars and light vans, and for workshops that service a wide variety of caliper configurations.

Key benefits are straightforward: hardened steel components give the strength required to withstand repeated torque, the zinc/phosphate finish improves corrosion resistance in damp workshop conditions, and the included adaptors ensure compatibility with most common piston face shapes and sizes so you avoid improvised methods that can damage seals or pistons. The combination of hand T‑bar, hex head and 3/8in drive compatibility lets you choose between manual leverage or ratchet operation for controlled, safe piston retraction.

Duchy Fasteners stocks this kit under Draper part number DR22461 and offers the 18‑piece set for single purchase and trade quantities. Replacement adaptor plates and pin sets are also available to complement our tool range.