Lincoln K and KP Numbers › Lincoln Electric KP509 PARTS KIT FOR PTW-18, PTA-26, & PTW-350 Lincoln Electric KP509 PARTS KIT FOR PTW-18, PTA-26, & PTW-350 Sale Price: $175.04 Original Price: $196.05 PARTS KIT FOR PTW-18, PTA-26, & PTW-350 PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! PARTS KIT FOR PTW-18, PTA-26, & PTW-350 PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000