The spiral bevel gear is made of metal, they are useful when the direction of rotation of a shaft must be changed.Good replacement for angle grinder broken gear.Product Name: Spiral bevel gearSuitable for: 100Material: metalRing Gear Size: 44 x 11 x 13mm / 1.7 inch x 0.4 inch x 0.5 inch(Outer diameter * Inner diameter . * D)Pinion Gear Size: 19 x 8 x 13mm / 0.7 inch x 0.3 inch x 0.51 inch(Outer diameter * Inner diameter * D)Tooth No .: Gross: 35 small: 14Color: Dark grayNet weight: 80gPackage Contents:1 x spiral cone gearOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.