The most comprehensive AR-15 Bench Block ever allows you to tap 13 critical pins from 5 different components. The Block is wrapped in an over-molding that grips to your bench to prevent slippage. Plus, engraved on the ultra-tough surface are clear component labels marked with pin punch sizes that make it easy to determine where to place components and what punches to use. Embedded magnets on the back of the Block capture pins and keep them from rolling away, and a pin storage section keeps them secure until you're done. Makes it easy to tap 13 pins from 5 different components Rugged resin work surface is labeled for easy identification Non-slip outer surface 4 strong magnets attracts loose pins Measures 5.25x7.5 inchPins: Bolt (horizontal) - 1/16 inch and 3/32 inch Bolt (vertical) Gas Block - 1/8 inch and 5/64 inch Upper Receiver Forward Assist - 3/32 inch Charging Handle - 5/64 inch Trigger Guard - 1/8 inch Lower Receiver (horizontal) Ejector Pusher Trigger Assembly 5/32 inch Order today!