Lincoln K and KP Numbers › Lincoln Electric KP1974-3 GUIDE TUBE ASBLY, 068-5/64 Lincoln Electric KP1974-3 GUIDE TUBE ASBLY, 068-5/64 Sale Price: $319.21 Original Price: $357.52 GUIDE TUBE ASBLY, 068-5/64 PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! GUIDE TUBE ASBLY, 068-5/64 PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000