Features: 1.Part Number: 66785 66786 are the replacing reference part number of the manual piston ring filer, please check before purchasing. 2.Function: To ensure proper piston ring clearance, piston ring filer can be used to file piston rings faster and more accurately. 3.Premium Material: Manual piston ring grinder is made of high quality aluminum alloy, will not rust, waterproof, solid and durable. 4.Easy to Use: Hold the piston ring on the pin and file the ring with a grinding wheel, shaking the handle to make sure the piston ring clearance is correct. 5.Practical Repairing Tool: Manual piston ring filer with 120 grit carbide grinding wheel is perfect for piston repairing. Specification: Item Type: Manual Piston Ring Filer_x005F_x000D_ Material: Aluminum alloy_x005F_x000D_ Characteristic: 120 grit carbide grinding wheel_x005F_x000D_ Using Method: Manual_x005F_x000D_ OE: 66785 66786_x005F_x000D_ Function: To ensure proper piston ring clearance, piston ring filer can be used to file piston rings faster and more accurately. Note: 1. Please double check the part number of your item, matching information is for reference only._x005F_x000D_ 2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!