These 17 mm hex adapters make it easy to install a wide range of wheel and tire combinations on your Traxxas vehicle. The adapter's unique design maximizes contact area with 17 mm splined wheels to improve grip and prevent rounding. 17 mm splined hubs also work with traditional 17 mm hex wheels for greater compatibility. Rugged machined-aluminum construction and vivid anodized color create a custom look for your vehicle with matching aluminum nuts. Package includes 17 mm hubs (4), wheel nuts (4), hub retainers (4) and axle pins (4).