Kit for standard and gas lens set-ups 0.040 in, 1/16 in, 3/32 in and 1/8 in Reusable plastic case.Includes:(4) Back Caps (1) Short, (2) Medium, (1) Long(12) Collets (2) 0.040 in, (4) 1/16 in, (4) 3/32 in, (2) 1/8 in(7) Collet Bodies (1) 0.040 in, (2) 1/16 in, (2) 3/32 in, (2) 1/8 in(4) Gas Lenses 0.040 in, 1/16 in, 3/32 in, and 1/8 in(1) Cup Gasket(4) O-Rings for Back Caps(10) Wire Clamps