Herringbone Gear Good quality and excellenct service. Herringbone Gear 1) Quality Products for various cars, trucks, buses, tractors, and trailers2) Spur gears, bevel gears, helical gears, worm gears, face gears, gear levels3) Standards: ASTM, DIN, EN, BS, JIS, ISOa 1, Our quality products are for various US, European and Asian cars, trucks, buses,tractors and trailers, such as GM, Ford, Chrysler ...