5 1/2" Square Leather Bench Block Pad For Chasing Stamping Forming Metal From RawTreasures This 5 1/2" square sandbag can be used with or without a bench block This square stitched leather pouch is filled with sand to absorb the energy, noise, and vibration caused by hammering on a bench block or anvil to flatten wire or chase metal. Great for stamping, chasing, and forming metal. The leather is slip resistant and helps deaden the blow and sound when striking a piece of material. It is a must for metal jewelry makers, wire workers, and metal clay artist who shape metal and wire.