Hawke XB30 2-7x 32mm Crossbow Scope - Scopes designed to withstand the rigours of crossbows with reticle systems guaranteed to make you a better shot! Distance aim points are calibrated to match the crossbow ballistics. Adjust speed selector (magnification) to match bow speed. Calibrated to work on crossbow speeds from 280 - 440 fps. Illuminated aim points represent 1.5 inches across at their respective distances out to 60 yards when on 425 fps (5x magnification) only. Capped Low-Profile Turrets 30mm Mono-Tube Chassis Illumination 12 MOA Low-Profile Fingertip Turrets Fixed Parallax At 45 Metres 11 Layer Fully Multi-Coated Lenses High Torque Zoom Ring Fast Focus Eyebell Suitable Speeds 280fps - 440fps