4pc Hardened Steel Punch Set Sizes: 7/32", 3/16", 5/32", and 1/8" * This Complete Set Will Give You The Precise Punch Tools To Assist with Your AR15 * Manufactured to Punch Out Roll Pins for Re-Use * Manufactured From Steel - Well Proportioned, Hardened and Properly Tempered. Have a Knurled Finger Grip. * Special Round Nose Punches Make Quick Work of those Stubborn Roll Pins Easy.