Lincoln K and KP Numbers › Lincoln Electric KP4378-180 GUN TUBE 180 DEGREE WC Lincoln Electric KP4378-180 GUN TUBE 180 DEGREE WC Sale Price: $2,016.59 Original Price: $2,258.58 GUN TUBE 180 DEGREE WC PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! GUN TUBE 180 DEGREE WC PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000