Lincoln K and KP Numbers › Lincoln Electric KP4696-45 GUN TUBE AND NUT ASBLY 550 Lincoln Electric KP4696-45 GUN TUBE AND NUT ASBLY 550 Sale Price: $109.88 Original Price: $123.06 GUN TUBE AND NUT ASBLY 550 PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! GUN TUBE AND NUT ASBLY 550 PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000