Kit Contains 4 Coupling Nuts. 6 Flange Nuts. 6 T-Slot Nuts. 1 T-Slot Cleaner. 24 Studs - 4 Each of : 3", 4", 5", 6", 7" and 8" long. 1 Step Block and Clamp Kit which includes: 6 Step Blocks, 6 Serrated End Clamps, 1 Plastic Holder. 1" Wide