2pcs Step Spur Gear 5mm Inner Aperture 16T 1 Module Aluminum Motor Gear HSS Lathe Tool Bits also can be applied to

also can be applied to the back of furniture and avoid scratch to wall

you can wrap tape on the metal tube (not included)

and wear protective glasses when using this corundum grinding bit

Widely used on different machineries

2pcs Step Spur Gear 5mm Inner Aperture 16T 1 Module Aluminum Motor Gear HSS Lathe Tool Bits also can be applied to1. The pinion motor gear is made of Aluminum, more stable, anti wear, strong and durable, and durable in use. 2. Specifications: Material: Aluminum, Teeth: 16T, Gear Step Diameter: 10mm 0. 39inch, Gear Step Height: 6mm 0. 24inch, Outer Diameter: 18mm 0. 71inch, Aperture: 5mm 0. 2inch, Effective Tooth Length: 6mm 0. 24inch, Total Thickness: 12mm 0. 47inch, Module: 1 Mod, Pressure Angle: 20 3. The pinion gear aperture is 5mm and the module is 1, please