66785 Portable Manual Piston Ring Filer Why Need a Piston Ring Gap Filter ? In the manufacture of engines, piston ring filter can ensure proper piston ring end clearance, enabling users to file piston rings quickly and accurately, reducing the chance of over-grinding and dropping the ring. Replacement Part Number: 66785 Portable Manual Piston Ring Grinder Size Piston ring grinder size: 7.2in length * 4.5in width * 1.9in height Carbide grinding wheel size: 2.4in diameter * 0.08in thickness Nut size: 0.38in 7.2in Portable Manual Piston Ring Grinder with 2.4in Diameter 120 Carbide Grinding Wheel for Automotive Replacement Engine Piston Ring Gap Tool Manual grinder ring is portable and can be mounted on any work bench easily. Position the piston ring and turn the handle to rotate the abrasive wheel. Piston ring grinder filer assures proper piston ring end-gap precisely. This 7.2in piston ring file features 2.4in Alloy carbide grinding wheel, durable and long-lasting. Benefit from your piston rings with proper end gap to improve engine performance and life Cut chrome plated or stainless steel piston rings quickly and accurately. Remove the material quickly, will keep you from getting too large a gap. We have our own warehouse, all piston ring gap filters ship from the USA. Install Piston Ring Gap Tool: HOW TO USE ? Position the piston ring firmly against the dowel pins, crank the handle to turn the abrasive wheel. Our Warehouse in the U.S. TOPAZ is a brand of Aftermarket Replacement Auto Parts, In our store, you can choose Piston Ring Filer and other Automotive Parts~ We have our own warehouse, all items ship from the USA.