Material: 6061-T651 aluminum Finish: Anodized Color: Sliver / BK /FDE This product includes the leveler base and both small and large wedges. The small wedge requires a space between the rail/mount and turret cluster from 0.190" to 0.730". The large wedge requires a space between the rail/mount and turret cluster from 0.680" to 1.200".