To assure proper piston ring end-gap, the piston ring filer enables the user to file piston rings quickly and accurately. Position the piston ring firmly against the dowel pins, crank the handle to turn the abrasive wheel. Using a feeler gauge, file the piston ring to meet the manufacturer's specification. Product Features:Manual Operated ModelComes with One 120 Grit Grinding WheelMade from High-Quality AluminumUses Proform Part #66786 Replacement Grinding WheelsCan Be Bench Mounted
