The HHA Optimizer Speed Dial Cross Bow Sight Mount OL-SD is a revolutionary tool for crossbow enthusiasts seeking unmatched accuracy. Utilizing your existing scope or red-dot sight, this mount incorporates the patented Speed Tape System to deliver precise shots from 20 to 80 yards. Constructed from CNC-machined aluminum, the lightweight 7 oz. system ensures durability and ease of installation. Perfect for crossbows with speeds ranging from 260 to 410 fps, the Optimizer Speed Dial elevates your shooting experience, making it an indispensable accessory for precision shooting. HHA Sports HHA Optimizer Speed Dial Cross Bow Sight Mount OL-SD