Standard Pack = 1 piece(s). Box Quantity = 6; Case Type = Metal Box; For Use on Bolt Size = 3/8, 1/2, 5/8 - 3/4, 1-1/8 - 1-1/4, 1-1/2 - 1-3/4 IN; For Use on Pipe Size = 1/8, 1/4, 3/8, 1/2, 3/4, 1 IN; Includes = 1 each: Number 1 thru Number 6; Type = 6 Piece Pipe, Stud & Screw Extractor Set;