8pcs package including as below:  2 Piece Ref.No : 18-7 Insert back Insulator  2 Piece Ref.No : 18CG Cup Gasket  2 Piece Ref.No : 54N01 Gas Len Insulator  2 Piece Ref No : 54N63 Lg.Dia. Gas Len Insulator  Features: This kit fits all 17 & 26 series air cooled torches and 18 series water cooled torches, including the Lincoln PTA-17, PTA-18 and PTA-26 torches, Miller Diamondback DB17, DB18 and DB 26 torches,  along with the Weldcraft WP-17, WP-18 and WP-26 torches.  Attention: Before purchasing, please reference your own consumables code or torch model code. If you are still not sure about the adaptability of consumables, do not hesitate to contact with us.