Kit Contains: 4 Coupling Nuts. 6 Flange Nuts. 6 T-Slot Nuts. 1 T-Slot Cleaner. 24 Studs - 4 Each of : 80mm, 110mm, 125mm, 150mm, 175mm and 200mm long. 1 Step Block and Clamp Kit which includes: 6 Step Blocks, 6 Serrated End Clamps, 1 Metal Holder. 25mm Wide.