Features 1、End thickness is processed to 3mm, which can conceal the screw head, thus saving weight and space, and providing versatility 2、Flip the gear to easily change the gear deck height by 3mm, very convenient 3、This hole diameter allows you to use shafts and tubes up to 32mm in diameter, such as for goTUBE and aluminum tube with an outer diameter of 32mm 4、These gears have a 32mm mounting style, so compatible with any 1302 or 1305 series clamping hub 5、Using the pinion, you can create a 3:1 reduction or overspeed setting according to your application. When used in conjunction with a 30-tooth servo gear, this combination produces a 3:1 underspeed, which reduces the final speed while increasing the torsion by 3 times Specification Item Type: Spur Gear Material: Aluminum Complete removal of anodizing Tooth: 108 MOD: 0.8 Pressure Angle: 20 Degrees Center Hole: Approx. 32mm / 1.3in Package List 1 x Spur Gear