Clamping Kit Super Machinist Number of Pieces 51 Slot Size 11/16 in For Use With 1/2 In.-13 Stud Size Includes (24) Studs (4) Each of English Kits 3 in 4 in 5 in 6 in 7 in and 8 in Long (4) Coupling Nuts (4) Flange Nuts (4) T-Slot Nuts (6) Serrated End Clamps (6) Step Blocks Holder with Wooden Base and Metal Tray T-Slot Cleaner Application Workholding During Machining