Description: High Quality: The disc brake piston tool is made of high quality steel material, durable. Perfect Design: This block rotates the pistons back into the brake caliper when replacing the brake pad on vehicles with rear wheel disc brakes. Removes and installs the disc brake pistons, inserts the piston slots into the back of the brake pad and rotates the piston back into the caliper. FEATURE: Lightweight, easy to install, sturdy, high strength. Usage: Use with a 3/8 inch square ratchet to rotate the pistons back into the cylinder, you can install rear brake piston discs on most cars and light duty vans. Application: Suitable for rewinding the oacute;w caliper when servicing the oacute;w brake. Specification: Material: steel Table oacute size: 2.5cm x 2.5cm/0.98 inch x 0.98 inch Package includes: 1 disc brake piston tool Note: Please allow slightly errors due to manual measurement and different monitors oacute;v.