3/8" Car Cube Brake Caliper Compression Tool, Stainless Steel Disc Brake Piston Caliper Wind Back Cube Tool, Universal Vehicle Rear Drive Disc Brake Piston Remover Adapter. Working Principle: This cube tool rotates pistons back into calipers when replacing brake pads on rear disc brake vehicles; it removes and installs disc brake pistons, realigns piston slots with the back of the brake pad, and rotates the piston back into the caliper.
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