Brand: Summit Racing Manufacturer's Part Number: SUM-CSUMSL32-1 Part Type: Piston Installation Tool Combos Product Line: Summit Racing? Piston Installation Tool Combo Kits Summit Racing Part Number: SUM-CSUMSL32-1 UPC: 190861124813 Piston Ring Compressor Included: Yes Piston Ring Compressor Minimum Diameter (in.): 4.000 in. Piston Ring Compressor Minimum Diameter (mm): 101.60mm Piston Ring Compressor Maximum Diameter (in.): 4.090 in. Piston Ring Compressor Maximum Diameter (mm): 103.89mm Piston Ring Compressor Material: Aluminum Piston Ring Compressor Finish: Black anodized Piston Ring Filer Included: Yes Piston Ring Filer Grinding Wheel Grit: 170/140 Piston Ring Filer Dial Indicator Included: No Piston Ring Filer Material: Steel Piston Ring Filer Finish: Natural Piston Ring Hammer Included: Yes Piston Installation Hammer Material: Polyurethane Piston Installation Hammer Finish: Blue Quantity: Sold as a kit. Summit Racing? Piston Installation Tool Combo Kits Summit Racing? piston installation tool combo kits make the process easier from start to finish. Each kit includes specialized tools that you'll need to install your pistons properly. They're available for a variety of minimum and maximum piston ring diameters. Order the model that best fits your application. These combo kits include the following:* A piston ring filer to gap piston rings* A band ring compressor with adjustable worm clamp* A balanced-swing hammer ideally suited for pistons