Lincoln K and KP Numbers › Lincoln Electric KP3991-50 CONDUIT LINER 50FT MAGNUM PRO Lincoln Electric KP3991-50 CONDUIT LINER 50FT MAGNUM PRO Sale Price: $228.11 Original Price: $255.48 CONDUIT LINER 50FT MAGNUM PRO PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! CONDUIT LINER 50FT MAGNUM PRO PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000