EWK 2-7 Inch Diameter Engine Cylinder Hone Deglazer Wheel Brake Honing Tool 220 Grit CARBON DEPOSITS INFLUENCE START-UPS - The Cylinder Hone Removes Carbon, Rust And Glaze Deposits On Cylinder Bores. Avoids The Possibility Of Low Cylinder Pressure To Affect Engine Start-Ups. ONLY TAKE LITTLE TIME TO HONE - With The Knurled Nut Adjusting Pressure Against The Cylinder Bores, Well-Controlled Honing Tension Creates Maximum Effectiveness. COMPATIBLE WITH ANY DRILLS - The Universal Tool Can Be Used With Any Drills You Already Have. Start Your Honing Work Right Away! EASIEST OPERATION - The Flexible Shaft And Spring-Loaded Legs Provide Simple Operation. The Tool Can Work Both On And Off The Car With No High Skills Required.