Lincoln K and KP Numbers › Lincoln Electric KP54A-B25 GAS DIFFUSER, 025-5/64, MAGNUM GUN (54A) Lincoln Electric KP54A-B25 GAS DIFFUSER, 025-5/64, MAGNUM GUN (54A) Sale Price: $146.21 Original Price: $163.75 GAS DIFFUSER, 025-5/64, MAGNUM GUN (54A) PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 25.000 Add To Cart Added! GAS DIFFUSER, 025-5/64, MAGNUM GUN (54A) PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 25.000