Pilot Punch Automatic No Punch Type Roll Pin Punch Tip Size 4 mm Tip Type Ball Shank Shape Round Shank Diameter 3/8 in Grip Style Knurled Hole Diameter 4 mm Overall Length 4 1/2 in Container Type Bulk Material Applications Metal Includes Striking Cap No Measurement Type Metric Includes Handguard No Taper Length 2 1/2 in Tether Ready No Includes Handle No Features Variable Point Sizes Available for Variable Radius Sizes for All Pin Configurations Finish Black Oxide