20 from the wear bushing 12 in the engaged position shown in fig1 and 2 the lugs 34 extend into the slot 60 so that the wear bushing 12 may be lifted out of the wellhead 14 once removed from the wellhead 14 the wear bushing 12 may be disengaged from the retrieving tool 20 by aligning the vertical slots 62 with the lugs 34 so that the retrieving tool 20 may be pulled upwardly and disengaged from the wear bushing 12 a stop 64 is provided in the slot 60 for aligning the lugs 34 with the vertical slots 62 the stop 64 is an extension of one of the walls of the vertical slots 62 so that upon rotation of the retrieving tool 20 the lugs 34 will be aligned with the slots 62 and the wear bushing 12 may be disengaged from the retrieving tool 20 in operation the wear bushing 12 protects the wellhead 14 during drilling operations when removal of the wear bushing 12 is required the drill string is raised and several joints of drill tubing are removed from the drill string the number of joints of tubings removed is selected by the drill operator the retrieving tool 20.