Extra-large Jeweler's, Leather-Craft Solid Rubber Bench Block - 6 x 4-inch Essential tool for jewelers, leather-crafters and other artisans, use as pounding surface or backing 3/4-inch-thick solid rubber provides firm, non-scratch, non-marking surface Dense and heavyweight (15 oz) to prevent deforming; self-healing - great for awl backing Dozens of other uses for arts and crafts, woodworking, metalworking - even auto body repair Dimensions: 6 x 4 x 3/4-inch. Color: Black