1 cup with gas lens diffuser installed Spare gas lens diffuser Ceramic cup Will thread on the 45V44 gas lens if you have a 9/20 torch. If you have a 17/18/26 torch, you will need the adapter kit. The Moose Knuckle #14 Ceramic cup includes a spare diffuser . It performs identical to the original glass version but has the added strength ceramic cups bring. The ceramic version comes only in 3/32 – 2.4 mm tungsten size and will thread on a 45V44 or the 17/18/26 Adaptor Kit . It does not require O-rings. The Moose Knuckle #14 will handle up to 200 amps non continuance and it is recommended for DC only applications.