Lincoln K and KP Numbers › Lincoln Electric KP5148-1 GUN TUBE EXTENSION ASSEMBLY 9 IN Lincoln Electric KP5148-1 GUN TUBE EXTENSION ASSEMBLY 9 IN Sale Price: $83.05 Original Price: $93.02 GUN TUBE EXTENSION ASSEMBLY 9 IN PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! GUN TUBE EXTENSION ASSEMBLY 9 IN PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000