2pcs Step Spur Gear 3mm Inner Hole Gear 21T Mod 0.5 Aluminum Alloy Motor Gear for RC Replacement Parts Accessories Electric Grinder Gearbox Reduction Gear Reducer

About This Product :

• Size – Teeth: Teeth: 21T, Step Diameter: 9mm / 0.35inch, Step Height: 5mm / 0.2inch, Outer Diameter: 11.3mm / 0.44inch, Inner Hole Diameter: 3mm / 0.12inch, Effective Tooth Length: 5mm / 0.2inch, Total Thickness: 10mm / 0.39inch, Teeth Pitch: 1.5mm / 0.06inch, Teeth Depth: 1.2mm / 0.05inch, Module: 0.5 Mod, Pressure Angle: 20°
• Material – The spur gear is made of Aluminum Alloy, more stable, anti-wear, strong and durable, and durable in use.
• Feature – Good machining made less roughness and noise than other gears that make them roll smoothly. Good pinion gear replacement for your device.
• Application – The spur pinion gears are widely applicable in various of Electric Grinders, Gearbox, Reduction Gear, and Gear Reducer.
• Note – Please confirm the size of the product before purchasing.