Ultimate Arms Gear Kensight ACCRO Adjustable white outline Rear Sight Squared, Recessed Blade, 3/32 Pin Punch Armorers Gunsmith Tool Package Includes: Kensight 860-303 + Ultimate Arms Gear Pro Disassembly 3/32 Pin Punch Armorers Gunsmith Tool Ultimate Arms Gear 3/32 Punch Armorers Gunsmith Tool Designed to Punch Pins. Features a Polymer Handle and Steel Tip for an Ultra Durable High End Tool. Diameter is 3/32 of an inch or 2.5mm.