Rchobbytop 4 Pack 12mm to 17mm Wheel Hub Hex Adapter Converter Extension Thicken 30mm Hexagonal Connector for 1/10 On Road Car Off Road Buggy Short Course Monster Truck Upgrade 1/8 Tires, Sky Blue

Material: Hex Adapter and lock nut: aluminum alloy, anodized finish. Hex bolt: Steel Applications: This 12mm to 17mm hex adapter conversion is for 1/10 scale vehicles to run with 1/8 wheels and tires. Package Included: 4×Wheel Hub Adapter 4×Wheel Nut 4×Hex Bolt 1×Wrench