Lincoln K and KP Numbers › Lincoln Electric KP2745-040-B100 CONTACT TIP, .040 (1.0 MM) 550A Lincoln Electric KP2745-040-B100 CONTACT TIP, .040 (1.0 MM) 550A Sale Price: $376.79 Original Price: $422.00 CONTACT TIP, .040 (1.0 MM) 550A PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 100.000 Add To Cart Added! CONTACT TIP, .040 (1.0 MM) 550A PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 100.000