Features: Increase the weight of wheels for greater control and stability CNC machined high quality brass material Precise dimension control to perfect fitting to for SCX10 90046 TRX4 Specifications: Material: brass colour: Black+gold Package Contents: 4 x Brass Clamp Rings Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.