Lincoln K and KP Numbers › Lincoln Electric KP4378-45 GUN TUBE 45 DEGREE WC Lincoln Electric KP4378-45 GUN TUBE 45 DEGREE WC Sale Price: $1,998.66 Original Price: $2,238.50 GUN TUBE 45 DEGREE WC PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! GUN TUBE 45 DEGREE WC PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000