Lincoln K and KP Numbers › Lincoln Electric KP2745-040 CONTACT TIP 550, .040 Lincoln Electric KP2745-040 CONTACT TIP 550, .040 Sale Price: $37.68 Original Price: $42.20 CONTACT TIP 550, .040 PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 10.000 Add To Cart Added! CONTACT TIP 550, .040 PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 10.000