Features 1、Application: 14mm stainless steel coupling is used to connect motor and wheel, which can be used as replacement repair spare parts. 2、Fixing Hub: The hub is fixed to the motor shaft with a coupling, and when you attach this stainless steel hub to the wheel, it will perfectly meet your requirements. 3、Unique Design: This shaft coupling has a unique design, cool personality, and can be installed without complicated steps, allowing to do it yourself modification and installation. 4、Easy to Install: Convenient to disassemble and install, you can directly replace the original or damaged parts to get higher strength. 5、Stainless Steel: The wheel is made of stainless steel and is therefore more durable and resistant to wear and tear than aluminum wheels. Item Type: 18014 Key Hub Material: Stainless Steel Gross Weight: 205g / 7.2oz Type: RC Accessories Diameter: Approx.56.8mm / 2.2in Width: Approx.26mm / 1.0in Aperture: Approx.14mm / 0.6in Applicable: for connecting motor and wheel Package List 1 x 14mm Stainless Steel Key Hub