Draper expert 4 piece 1 2 sq dr wheel nut double socket kit draper expert 9539 b i expert quality i b three double ended impact sockets size 17 19 and 21mm one end is hexagon 6pt and the other a reverse conical gripper thread for the removal of locking wheel nuts supplied complete with a 1 2 sq dr 75mm impact extension bar packed in a nylon wallet with hook and loop closure in display carton br br b b br br these kits should only be sold to i bona fide i garages an