OTC (6986) SAE Stud Remover Set - 4 Piece The best professional extractors available Designed and tested to reach studs in difficult work areas Set features a 3/8 inch drive for 1/4 inch and 5/16 inch stud sizes and a 1/2 inch drive for 3/8 inch and 7/16 inch stud sizes Includes OTC 6986-1 1/4 inch stud remover, OTC 6986-2 5/16 inch stud remover, OTC 6986-3 3/8 inch stud remover, and OTC 6986-4 7/16 inch stud remover All housed in a blow molded storage case