Brand: Summit Racing Manufacturer's Part Number: SUM-970013 Part Type: Piston Ring Filers Product Line: Summit Racing? USA-1 Ring Filers Summit Racing Part Number: SUM-970013 UPC: 190861256774 Grinding Wheel Grit: 120 Dial Indicator Included: No Dial Indicator Range (in.): 0-1.00 in. Dial Indicator Increments (in.): 0.001 in. Piston Ring Filer Material: Steel Piston Ring Filer Finish: Black powdercoated Quantity: Sold individually. Notes: Knurled knob in 0.001 in. increment standard， Indicator optional. 3 in. diameter wheel， 1/8 in. thick， 1/4 in. arbor. Summit Racing? USA-1 Ring Filers Summit Racing? USA-1 piston ring filers are designed for engine builders on a budget who demand accurate and affordable equipment. They're designed and built with American-made materials and perform much better than other filers in their price range. These rings are nearly identical to our Pro Ring filers， but are powered by your drill to save money! USA-1 filers make quick work of even the toughest steel rings. Precision table action allows a full sweep across the grinding wheel face for even wear. The adjustment knob is marked in 0.001 increments to hit your target clearance quickly and confidently. The filing machines come in a wide variety of colors， including premium 2-stage candy finishes to match your shop equipment.