The Fuel and Oil Casing/Canister Wrench Set, No. 23500, fromSchley Products is designed to remove oil or diesel fuel filter canisters from any New Holland, Case IH combines and tractors using IVECO diesel engines. The wrench set tightly fits around the filter housing, providing a secure grip that minimizes the risk of slippage or damage to either plastic or aluminum filter housings. Each wrench incorporates a 1/2" square drive enabling the use of a breaker bar or socket. Manufactured in the USA.