1、PERFECT COMPATIBILITY: RC hex adapter is perfect for Traxxas Slash, for Rustler, for Stampede and Other 1/10 RC cars, practical RC accessories. 2、SUPERIOR PERFORMANCE: This coupler allows cars with 12mm couplers to use 17mm coupler tires for a wider stance and more control. 3、HIGH SAFETY: The hex combiner is fine machined and under strict quality control to ensure that it will not fall off or loosen during use, improving the safety of the RC car. 4、CNC FINE MACHINING: The 12mm to 17mm wheel hex hub adapter is finely crafted and manufactured with fine CNC machining to enhance overall control performance and durability. 5、ALUMINUM ALLOY MATERIAL: The 12mm to 17mm wheel hex adapter is made of premium aluminum alloy, which is sturdy and durable, lightweight, and won't increase the burden of the RC car. Item Type: 12mm to 17mm Wheel Hex Adapter Material: Aluminum Alloy Applicable: for Traxxas Slash, for Rustler, for Stampede and Other 1/10 RC Cars 4 x Combiner 4 x Nut 4 x Rubber Band 4 x Fittings 1 x Wrench