Includes:(2) Back Caps (1) Short (1) Long; (10) Collets (1) 0.040 in (3) 1/16 in (2) 3/32 in (2) 1/8 in (1) 5/32 in; (8) Collet Bodies (1) 0.040 in (2) 1/16 in (2) 3/32 in (2) 1/8 in (1) 5/32 in; (4) Gas Lenses 0.040 in 1/16 in 3/32 in and 1/8 in; (2) Cup Gaskets; (1) Gas Lens Insulator; (4) O-Rings for Back Caps