Features 1.Material: RC car parts are made of aluminum alloy material, lightweight, strong and durable for long time use. 2.Exquisite Workmanship: This RC hexagonal coupler is CNC machined and anodized to increase strength and accuracy. 3.Replacement: This RC car hex coupler can be used to replace old and damaged original parts, easy to replace. 4.Easy To Use: This RC car accessory is easy to use and can be easily installed and removed without professional skills. 5.Applicability: Lightweight and durable, universal, repair and upgrade accessory for 1/10 RC climbing cars. Specification Item Type: RC Wheel Hex Hub Material: Aluminum Alloy Combiner Diameter: Approx.12mm / 0.5in Combiner Height: Approx.20mm / 0.8in Application: for 1/10 RC Climbing Car Universal Package List 4 x Combiner 4 x Offset Extensions 4 x Screw