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.Specification:1.Product Model : 1.5M-70T/72T2.Material : SC45#Carbon Steel3.Surface Treatment : High Frequency Quenching+Blackening4.Teeth Pitch : 4.71 mm5.Teeth Depth : 3.375 mm6.Teeth Height : 15 mm7.Gear Total Height : 28 mm8.Package :Spur Gear+M5*2