[More Cylinder Styles]: Small Engine Honing Tool 220 medium grit stones; square ends of stones make this Brake honing tool Perfect for step cuts and blind end cylinders Flexible shaft and spread control tension nut allow for faster cutting and maneuverability; 3 carbide stones are designed to be self-centered for quick insertion; Stone sleeves add strength and protect the stone when not in use Use a brake honing tool to remove carbon, rust and thermal glaze deposits from the caliper and piston cylinder walls; pair with a power drill, lubricate with brake fluid and move up and down both sides of the engine cylinder at low speed [Adjustment Range]: Controls the range and pressure applied to the cylinder for a smoother, cleaner ; Spring knurled adjustment nut increases tension and locks brake caliper honed metal arms in place; For use with diameters 3/4 to 1- 1/2 inch (1.9 to 6.4 cm) cylinder, Manufacturer: Fuhjythy