are designed this puller to remove the pencil-type fuel injector nozzles used in many agricultural and construction enginesThe slide hammer action gives a straight even pull without damaging componentsWorks on Case Caterpillar GM John Deere Waukesha and White diesel enginesOTC Pencil-Type Fuel Injector Nozzle Puller are designed this puller to remove the pencil-type fuel injector nozzles used in many agricultural and construction engines. The slide hammer action gives a straight even pull without damaging components. It works on Case Caterpillar GM John Deere Waukesha and White diesel engines.