For removal or installation of studs. Simply put the socket over the stud, then just turn in either direction using a tommy bar or a 3/4"" drive ratchet or wrench. 
Roller cams grip firmly onto stud. Sets come complete in a blow mold cases.

Sizes:  18mm, 20mm, 22mm, 24mm, 27mm, 28mm, 29mm, 30mm.

Barcode # 9322159250367