Lincoln K and KP Numbers › Lincoln Electric KP4481-2-HD HD HYPERFILL W/C GAS DIFFUSER Lincoln Electric KP4481-2-HD HD HYPERFILL W/C GAS DIFFUSER Sale Price: $21.06 Original Price: $23.59 HD HYPERFILL W/C GAS DIFFUSER PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! HD HYPERFILL W/C GAS DIFFUSER PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000