Features: 1.Suitable for degreasing of engine cylinders with diameters of 3/4 in to 2?1/2 in and 1?1/4 in to 3?1/2 in. 2.Flexible shaft, easy to use and automatic centering. The knurling wheel can adjust the spring pressure of the stone on the cylinder hole. 3.Remove carbon deposits and hot glazes from cylinder holes. Ideal for removing rust deposits from older re? builds. 4.Adopt premium iron material, antirust, anti?corrosion and durable, ensures long lifespan. 5.Ergonomic design, easy to operate, labor-saving, high work efficiency, bring much convenience for you. Specification: Condition: Brand New_x000D_ Item Type: Cylinder Honing Tool_x000D_ Material: Iron_x000D_ Manufacturer Part Number: 88233_x000D_ Range: Approx. 51-165mm/2-6.5in_x000D_ Usage:_x000D_ Step 1._x000D_ Spray lubricant on the stones or the cylinder bores. Get the hone set up on the drill._x000D_ Step 2._x000D_ Insert the engine hone into the cylinder and run the drill at low speed between 300-700 RPM. Move the hone up and down around once a second._x000D_ Don't push or pull the stones more than 3/4 inches out of the cylinder. Don't run the engine hone for more than 3 mins._x000D_ Step 3._x000D_ After honing, use a paper towel to wipe out the inside of cylinder. PackageList: 1 x Cylinder Honing Tool