The Estwing rock chisel, 9" size, Model ERC-9 is great for wedging and prying. The rock chisel cutting point is 3/4", with a 9" overall length and shock reduction grip of nylon vinyl. The Estwing rock chisel will receive a discount at the SHOPPING CART. Estwing Manufacturing Co has been making solid steel striking tools in the U.S.A. since 1923.