The AWTools automotive tool cleans and degreases brake cylinders, bearings and car clutches, as well as the cylinders of motorcycle, lawnmower, outboard and industrial engines or machinery. It has three arms with jaws fitted with abrasive stones, while the flexible shaft helps with self-centering and proper alignment. The pressure of the stones against the cylinder is adjusted using a spring and a knurled nut.
- Arms: 3
- Range: 32–89 mm
- Overall length: 230 mm
- Stone size: 51 × 7 mm
- Weight: 130 g
- Compatibility: Standard or electric drill with a 3-jaw chuck