Draper Expert Brake Caliper Piston Wind Back Kit (39 Piece)

Carry out professional brake servicing quickly and efficiently with the Draper Expert Brake Caliper Piston Wind Back Kit (CWBT39B). This comprehensive 39-piece kit provides everything needed to wind back brake caliper pistons and complete brake pad replacements across the vast majority of modern vehicles – all in a single, well-organised carry case.

Left and Right Hand Winders for Full Compatibility

Modern vehicles use both rotating and non-rotating caliper pistons, and the direction of wind-back varies between manufacturers. The CWBT39B addresses this with dedicated left-handed and right-handed winding adaptors, ensuring the kit can handle virtually any rear brake caliper configuration encountered in everyday workshop use. The correct winding direction prevents piston thread damage and ensures a clean, reliable wind-back every time.

26 Brake Piston Winder Adaptors for Maximum Vehicle Coverage

The breadth of this kit's compatibility comes from its 26 brake piston winder adaptors, which together cover an extensive range of caliper piston profiles across passenger cars, SUVs, and light commercial vehicles. Whether you're working on a common family hatchback or a less familiar import, the CWBT39B gives you the right adaptor for the job without the need for additional tooling.

Pentagon Brake Sockets and Key for Caliper Work

The kit includes a comprehensive selection of 1/2" square drive pentagon brake sockets and key for tackling the specialist fasteners found on brake calipers across a range of vehicle makes:

• Pentagon brake key: 1/2" Sq. Dr. x 10mm
• Pentagon brake socket: 1/2" Sq. Dr. x 14mm
• Pentagon brake socket: 1/2" Sq. Dr. x 19mm

These dedicated pentagon drive tools address one of the most common frustrations in brake work – finding the right fitting for non-standard caliper bolts.

Hex Caliper Retaining Bolt Keys and Pin Punches

Rounding out the kit's brake servicing capability are hex caliper retaining bolt keys in 6mm and 7mm, along with pad retaining roll pin punches in 5.5mm and 6mm. These additions mean the CWBT39B covers not just piston wind-back, but many of the associated tasks involved in a complete brake service – reducing the need to reach for additional tools mid-job.

Brake Reaction Back Plates for Piston Protection

Four brake reaction back plates are included to protect the face of the caliper piston during wind-back, distributing the load evenly and preventing damage to the piston surface. Using the correct back plate for each piston profile is essential for a professional, damage-free brake service.

Supplied in a Blow-Mould Carry Case

All 39 components are neatly stored in a blow-moulded plastic carry case with display sleeve, keeping every adaptor, socket, and tool organised and easy to locate. The robust case protects the kit between uses and makes it straightforward to transport between vehicles or workstations.

Key Features

• 39-piece comprehensive brake caliper piston wind back kit
• Left and right-handed winding adaptors for full caliper compatibility
• 26 brake piston winder adaptors for maximum vehicle coverage
• 4 brake reaction back plates to protect piston faces during wind-back
• Pentagon brake key and sockets – 10mm, 14mm and 19mm, all 1/2" Sq. Dr.
• Hex caliper retaining bolt keys – 6mm and 7mm
• Pad retaining roll pin punches – 5.5mm and 6mm
• Blow-moulded plastic carry case with display sleeve
• Suitable for most cars and light commercial vehicles

Kit Contents

Specifications

Why Choose the Draper Expert CWBT39B?

Brake pad replacement is one of the most frequently performed jobs in any workshop – and having the right wind-back tools is the difference between a smooth, 30-minute job and a frustrating struggle with ill-fitting adaptors and damaged pistons. The CWBT39B's 26 adaptors, dual-direction winders, pentagon sockets, and reaction back plates cover every aspect of the wind-back process across an exceptionally wide range of vehicles. Backed by the Draper Expert name and supplied in a robust carry case, this kit is a definitive brake servicing solution for professionals and serious home mechanics alike.