Huaca San Miguel, Parque de las Leyendas, Lima, Peru, 2015. Creator 23PCS Pneumatic Brake Caliper Piston Wind Back Compression Spreading Tool. Pneumatic Brake Caliper Piston Wind Back Compression Spreading Tool 23PCS Kit Rewind Spreader Air Tool Set to Repair Brake Pad Change Brake Pump for Cars Trucks Package List 1x Caliper compressor tool 22x Drive key disc adapters 1x Case Features 1. Pneumatic Brake Caliper Tool Pneumatic tools, less worry and effort. Came with 360 degree swivel rod, suitable for both clockwise and counterclockwise wind back pistons. Easy to operate. Convenient magnetic plate attaches fittings quickly. 2. Small Magnet Humanized design. For use on securely holding caliper adapters in place. 3. 22PCS Drive Key Disc Adapters 22PCS fittings, suitable for vehicles of multiple types, domestic and foreign. Choose the correct adapter according to the actual situation of the piston. Models are etched on the adapters for easy to choose. 4. Blow molded Case Keeps everything in place and avoids missing. Durable and reliable quality stands up to repeated use. How to Use 1. Select the right adapter for your car according to specific conditions. 2. Connect the piston to this pneumatic brake caliper tool with the adapter. 3. Connect to air compressor (below 114PSI) by the 1 4" air plug, press and hold down the air trigger. Turn the swivel handle clockwise or anticlockwise as you need. 4. After the operation is completed, release the air trigger and press the quick release button to exhaust the pressure.