Lincoln K and KP Numbers › Lincoln Electric KP21T-37 NOZZLE, GAS, FIXED, .375 ID Lincoln Electric KP21T-37 NOZZLE, GAS, FIXED, .375 ID Sale Price: $23.39 Original Price: $26.20 NOZZLE, GAS, FIXED, .375 ID PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! NOZZLE, GAS, FIXED, .375 ID PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000