Wheeler AR Bolt Catch Install Punch Kit - Kit includes two steel 3/32" punches. One punch has a counter-bored tip to start roll pins and the other has an indexing tip to finish roll pins. Punches are flat on one side for proper alignment and rubber overmolded to prevent damage to firearm. Start bolt catch roll pin easily with starter punchFinish installation flush with the finishing punchFlat on one side for proper alignmentTwo-piece set includes two 3/32 in punchesCounterbored tips to start roll pinsIndexing tips to finish roll pins