This is an uprated Fuel Tank Sending unit for a MG Midget 1972 to 1979. The modern design is made from a Acetyl (Acetal) Copolymer which is the highest grade of fuel resistant plastic. Same with the float, not only it is designed resist all gasoline and methanol fuels, the design also gives the the most accurate reading. As for the electronics, they are made on modern ceramic with palladium silver conductor pattern that come into contact with the contact arm that is made of phosphor bronze. All of this means long life and accurate measurement. No more worrying about a sinking float or if your really have that much fuel left in your tank. Best of all they are made in the UK by people that know British cars.