DescriptionSpecificationsDescription50 Piece Fixturing Step Block & Clamp Set with 1-1/2" Step Block, 1" T-Slot, 3/4-10 Stud Thread 1-5/8" Nut Width, 3, 4, 5, 6, 7 & 8" Stud LengthsSpecificationsManufacturer NameTE-CO