1.5M Spur GearMaterial: 45# steelTeeth: 12 Teeth ~ 28 TeethTeeth Pitch: 4.71mmBore: 6/8/10/12/14/15/16mmTeeth Height: 15mmFor other data, please discuss with the size table.Screw: M5*2Tooth Surface Treatment: high-frequency quenching and hardeningQuantity : According for your Choose!