TenPoint Crossbows Illuminating Rangemaster Pro Crossbow Scope (HCA-09811) 8.25-inch aluminum scope features a variable speed and ARROW DROP COMPENSATION SETTING for crossbows that shoot between 275 and425 FPS, and requires no adjustment for distance 7/8" scope mounting rings INCLUDED An etched glassreticle and FULLY MULTI-COATED 1.5 to 5x optics reduce the loss of lighttransmission, while a 30mm tube heightens light-gathering and durability Has non-illuminated black dots that can be turned on for either red or green rheostat-controlled, ILLUMINATED COLOR DOTS with 5 light intensities each Crosshairs for 20, 30, and 40 yards with 50 and 60-yard dots (fourth and fifth dots are free standing, just below the 40-yard crosshair)