Accessories and Parts -Hex Extended Hub Adapter Highlights Generic Brand Hex Extended Hub Adapter Description: Material: Aluminum Alloy. Light weight and durable. Long extension: 15 mm, 20 mm, 25 mm. Suitable for 1:10 RC Crawler Wraith CC01 AXIAL SCX10 D90 AX10 F350. The coupler increases vehicle stability, cornering speed and brake efficiency. Perfect design, exquisite workmanship and high performance. Specification: Color: Red, Black, Purple, Blue for different sizes. Hex Hub: 12mm/0.47inch Package Include: 4 Pcs Wheel Hex Hub Adapter (2-pack) 1 Accessory Pack (As Picture Shows) (2-pack) Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may be 1-2mm error in size.