Draper Oil Filter Strap Wrench, 3/8″ and 1/2″ Sq. Dr., 56137. We accept no liability in relation to any of the above other than as may be provided for under your statutory rights. Heavy duty webbing strap 1000mm x 38mm with 3/8″ x 1/2″ square drive/21mm x 13/16″ AF cam for tightening.