Urrea sae short combination wrench, 1218t, 9/16″ opening, 12 point, polished finish 12-point box-end with 15 angle for comfortable handling. Thin and compact end. The super drive box-end distributes the torque force applied around the entire nut head, thus avoiding corner deformations. Machined and thermal-treated, exceeding international asme/ansi and sae standards. Urrea grip system.