1. Not easy to wear, durable performance. This gear is a good industrial alternative accessory.2. Widely used in conveying, hardware, agricultural equipment, printing machinery, mechanical transmission and so on.3. The contact between the gears is firm to ensure the normal operation of the machine and good carrying capacity.Name: 1.5M Spur GearMaterial: 45# SteelModel: 1.5M 12-27 teethAppearance: Flat on both sidesThickness(B): 15mmTooth Pitch(C): 4.71mmOuter Diameter(A): 21-43.5mmInner Hole: Rough HoleTooth Surface Hardness: Hardened tooth surface