Craftsman 1-1/2 inch Wobble Extension - 1/4 inch Drive gets into tight spaces the 1-1/2 inch wobble extension-1/4 inch drive gives you the extra reach to grasp fasteners. The wobble extension design is perfect for keeping the socket solid as you work， as well as getting into tight spaces with the ease that hand tools can't provide you. It has a 1-1/2 inch length. The silver Craftsman 1-1/2 inch wobble extension - 1/4 inch drive has a standard rather than impact design and it is made of strong alloy steel. The metal is durable and strong.