Detailed Product Description Steel Clamping Kit 58pcs set contains-24 Screw(4each 3"~8")-6 T-Slot Nuts-6 Flange Nuts-4 Coupling Nuts-6 Step Clamps(2each 1S,2S,3S)-12 Steel Triangle(4each 1S,2S,3S)MATRICGBUSM85/16-185/16-18M103/8-163/8-16M121/2-121/2-13M14M165/8-115/8-11