Real Avid Smart Bench BlockMade 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 wont 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