Feature:1. Excellent Grade Material: Made of excellent grade zinc alloy material, rust proof, wearproof, durable, stable and reliable, not easy to damage, long service life.2. RC Wheel Hex Hub Adapter: Helps climb and stabilize by lowering the center of gravity, with enough weight to make difficult movements (such as climbing with increased speed) more stable.3. Adapters Reduce Backlash: They bind more tightly to the wheel, reducing unnecessary rocking in the vehicle, and they can transfer pressure flexibly.4. Reasonable Design: Easy to install and disassemble, can directly replace the original plastic parts or damaged parts, in order to obtain higher strength.5. Ideal Accessory: We choose excellent grade zinc alloy material, the use of advanced manufacturing technology, to provide you with better products, is a nice accessory .Specification:Item Type: 1/16 RC Hex CouplerWeight: 11g/0.4ozProduct Type: RC accessoriesMaterial: zinc alloyColor: SilverDiameter: 12mm/0.5inThickness: 4mm/0.16inCenter Aperture: 4.5mm/0.18inApplicable Model: Suitable for SCY 16101 16102 16103 16201 1/16 RC cars.Package List:4 x AdapterNote:1. Due to manual measurement, please allow 1‑3mm error, thank you!2. The picture may not reflect the actual color of the item due to differences between different monitors.