We can supply gears according to customer's drawing. including spur gear, helical gear, herringbone, double-helical gear, gear ring, gear shaft and so on . D P: 0.85 to 3 Module: 8 to 30 Diameter: 500 to 2000 mm Ground tooth: AGMA Q13 Standards: AGMA, ISO, DIN, JIS Material: according to customer's drawings and requirements