MPN: 24300. This hand-operated tool uses a fast-acting plunger to make brake service quicker and is intended for single piston disc brake caliper applications. Manufacturer: Lisle. The Speedy Brake Pad Spreader can also be referred to as a disc brake piston compressor, a brake caliper piston tool, a brake pad spreader tool, a single piston caliper compressor, and a brake service spreader.