Lincoln K and KP Numbers › Lincoln Electric KP1991-1 NOZZLE TIP, .312 ID Lincoln Electric KP1991-1 NOZZLE TIP, .312 ID Sale Price: $64.13 Original Price: $71.82 NOZZLE TIP, .312 ID PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! NOZZLE TIP, .312 ID PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000