SAE Spanner 1.Mat finish, Chrome Plated 2.All Metal Construction 3.Drop Forged,Cold Stamped,Chrome Plated, ... :1)Material: 45#Carbon Steel, 40Cr, CRV 2)Kind: Mirror Polished \ Matt Finish \ Satin Finish \ Mirror Polished With Rubber Handle \ Black Nickle3)size ... range: 1/4",5/16",3/8",7/16",1/2",9/16 ...