Lincoln Service Parts 2 › Lincoln Electric 9SS29251 AIR FITTING, 4MM HOSE S29251 Lincoln Electric 9SS29251 AIR FITTING, 4MM HOSE S29251 Sale Price: $42.50 Original Price: $48.88 AIR FITTING, 4MM HOSE PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! AIR FITTING, 4MM HOSE PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1