6" x 4" Steel Block Swage Grooved Forming and Flat Double Sided Bench Tool 4'' x 6'' Steel Block Swage Overall dimension: 4''L x 6''W x 3/8''H Nine half-cylinder swage channels 1.5mm to 4mm width;Reverse side is flat for use as anvil or bench block Jeweler's tool for creating unique designs for necklaces, bracelets and more Quantity: 1; Item weight: 4 lbs; Professional results forming gold, silver, copper, bronze work pieces