The finest in the world. Made in USA. Sender is made from durable 316 Stainless Steel and features the SAE 5 hole pattern for mounting and gasket. Sender is available in 240-30 Ohm or 0-90 Ohm range to match your fuel gauge. (Make sure you know the Ohm range of your gauge). Includes cork gasket. Available in different lengths - length ordered should be 1" shorter than the depth of your tank.