1. WIDE APPLICATION The disc brake caliper tool kit includes 2 sets of piston plates, spaced from 19/16 to 23/8 inches (2.5 to 5.1 cm) to allow room for brake pads. Fits most cars, trucks and some commercial vehicles 2. A MUSTHAVE TOOL Used to hold the compression plate in place when you pull the handle back and forth to deploy or retract the plate. Fits most two and fourpiston fixed calipers as well as single and twopiston floating calipers. 3. EASY TO USE The Brake Piston Compression Tool provides 360degree swing, allowing you to hold the compression plate in place as you pull the handle back and forth to deploy or retract the plate. The centered ratchet screw creates an even force when compressing the piston to ensure proper alignment and prevent damage to your brake components. for professional mechanics and personal repairs. 4. PREMIUM QUALITY Made of good quality carbon steel and passed strict quality inspection. Ratcheting caliper spreader comes with two steel plates (45/8' long x 23/8' high). Larger boards are held in place with internal magnets for easy attachment and disassemble. The handle is made of a plastic casing.