specs:aluminum structure.Special design to provide a quick and effective upgrade to your car.strong and stable, easy to install.item name: steering wheel hub adapter.material: ABS, metal.suitable: for vw golf mk3height: 7.1cm (approx.)note:Due to the light and screen difference, the items color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Included:1 adapter for steering wheel hub,1 set of screw accessories.