... cars, trucks, buses, tractors, and trailers2) Spur gears, bevel gears, helical gears, worm gears, face gears, gear levels3) Standards: ASTM, DIN, ... gears, bevel gears, helical gears, wormgears, face gears and gear levels, are widely used in such fields as vehicles,mining ... features/benefits7) OEM service (model, number of teeth, outside and inside diameters, thickness) Double Gear(ISO/TS approved)