Description: Made of metal material, durable for use. Suitable for 1/10 crawlers. Replacement parts for RC model accessory, easy and fast installation. Novel appearance and exquisite workmanship. Upgrade parts for your model car and increase the stability and improves overall performance. Specification: Material: Metal Size Chart: Length: 20mm/0.79inch Diameter: 13.8mm/0.54inch Package Includes: Aluminum Hex Adapters (4 Pcs) Aluminum Hexagon Lock Post (4pcs) Fixing Screws (4 Pcs) Note: Please allow 1-3mm measuring deviation due to manual measurement. Due to the different monitor and light effect,the actual color of the item might be slightly different from the color showed on the pictures.Thank you!