Features patented reverse tapered thread to remove stripped lug nuts or lug nuts with missing keys; Heavy duty threads make these sockets reusable; Use with 1/2" drive impact wrench; Sizes ; Included:#A146 - 3/4"; #A147 - 13/16"; #4002 - 15/16"; #A148 - 1"; #A149 - 1-1/8"