Lincoln K and KP Numbers › Lincoln Electric KP5565-1 DIFFUSER, THREAD-ON Lincoln Electric KP5565-1 DIFFUSER, THREAD-ON Sale Price: $24.38 Original Price: $27.30 DIFFUSER, THREAD-ON PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! DIFFUSER, THREAD-ON PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000