Westward 2YNF2 Automatic Center Punch The spring-loaded tip of automatic centering punches triggers downward pressure, eliminating the need to strike the punch. They ensure consistent force for marks of uniform depth and size. Automatic / Yes Container Type / Box Features / Single Hand Operation Grip Style / Knurled Overall Length / 6 inch Punch Type / Center Punch Shank Diameter / 5/8 inch Shank Shape / Round Taper Length / 1 inch