Complete Rivet Set Kit: Includes four straight rivet sets in 3/32", 1/8", 5/32", and 3/16" sizes to cover common AN470 rivet applications, Precision .401 Shank: Each tool features a precision-ground .401 shank for proper fit and consistent performance in rivet guns, High Alloy Steel Build: Manufactured from high alloy steel and heat treated to reduce breakage and extend tool life, Polished Cup Finish: Precision-formed, highly polished cups create clean, professional rivet heads during installation, Extended Reach Length: 3-1/2 inch overall length provides added reach and control for aircraft, chassis, and sheet metal fabrication work.