Item Type: RC Wheel Hub Extension Nut Material: Stainless steel Color: Silver Hex Diameter: Approx. 8mm/0.3ina Suitable for: For Axial SCX10, for Traxxas D90, for Redcat, for GEN8 Package List 8 x RC Wheel Hub Extension Nut 1. Please allow 1& 8209;3mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1Applicable Model: This extension hex drive adapter is suitable for Axial SCX10, for Traxxas D90, for Redcat, for GEN8 RC cars. 2Premium Material: The wheel hub adapters are made of premium stainless steel, which is rust proof, wear resistant, stable and reliable, and has a long service life. 3Fine Made: The extension nuts are precisely made, CNC accuracy machined, with reasonable design and accurate size, easy to replace and install. 4Improve Stability: These extension hex drive adapter can extend the wheel hub and improve the stability of the vehicle, the fixed end has high strength and is not easy to twist. 5Perfect Substitute: The set contains 8 pcs RC car wheel hub extension adapters, ideal for your remote control car to obtain higher strength and better performance.