Lincoln K and KP Numbers › Lincoln Electric KP4403-180-6L EXT. LENGTH WC GOOSENECK, 180 DEG. Lincoln Electric KP4403-180-6L EXT. LENGTH WC GOOSENECK, 180 DEG. Sale Price: $2,246.83 Original Price: $2,516.45 EXT. LENGTH WC GOOSENECK, 180 DEG. PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! EXT. LENGTH WC GOOSENECK, 180 DEG. PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000