Lincoln K and KP Numbers › Lincoln Electric KP4523-1-50R NOZZLE 500A, THREAD-ON, 1/8R 1/2 ID Lincoln Electric KP4523-1-50R NOZZLE 500A, THREAD-ON, 1/8R 1/2 ID Sale Price: $23.39 Original Price: $26.20 NOZZLE 500A, THREAD-ON, 1/8R 1/2 ID PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! NOZZLE 500A, THREAD-ON, 1/8R 1/2 ID PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000