Lincoln K and KP Numbers › Lincoln Electric KP3617-1-50R 350A NARROW GAP NOZZLE, .500 ID, RECESS Lincoln Electric KP3617-1-50R 350A NARROW GAP NOZZLE, .500 ID, RECESS Sale Price: $29.74 Original Price: $33.31 350A NARROW GAP NOZZLE, .500 ID, RECESS PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! 350A NARROW GAP NOZZLE, .500 ID, RECESS PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000