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 Name:Cylindrical Gear2.Model: 1M-12T/13T/14T/15T/16T/17T/18T/19T/20T/21T/22T3.Inner Bore :Process Hole4.Material: SC45#(Carbon Steel)5.Surface Treatment: Blackening6.Gear Height:10 mm7.Package Include:Gear *1 piece