Made from engineering grade resin, this intelligently designed gunsmith block helps protect gun finishes. The non-slip outer ring keeps the block from sliding on tables or benches while driving pins. An embedded magnet captures and holds driven pins so that they won't roll away. A rounded slot seats barrels and gun slides for increased stability. Designed to work with most guns. Makes the job easier and faster! Made from engineering-grade resin, this block helps protect gun finishes. The outside rubber liner keeps the block from sliding on any surface when driving pins. And inside the block is a magnet that grabs dropped pins. So intelligently designed, you'll feel smarter just using it.