Wheel hubs splined 17mm (blue-anodized) (4)/ wheel nuts sTraxxas 17mm hubs and wheel nuts are made from durable 6061 T6 aluminum, feature an innovative new splined design, and are anodized in a brilliant red or blue finish. For precision alignment and unsurpassed torque handling, the splined design interlocks with Traxxas 17mm splined wheels. The ground breaking design also accepts traditional aftermarket 17mm hex hubs.