Made from engineering grade resin, this intelligently designed gunsmith block won t mar or damage 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! Product Features Universal hole sizes accommodates most pin removals. Ultra-Touch engineering resin won't mar gun finishes Central groove steadies barrels Embedded magnets to safely capture loose pins Rubberized Non-Slip outer surface steadies block during use Embedded magnet holds small pins securely