Ravin 1-8x24mm Adjustable Turret LPVO Rifle Scope 30mm Tube Single Crosshair. The 1-824 illuminated scope has a single crosshair for precise target acquisition and allows users to simply turn the elevation turret to adjust the desired yardage. Sight tapes are included to match the scope to your crossbow or you can create your own with the included blank tapes Specifications for Ravin 1-8x24mm 30mm Tube Adjustable Turret LPVO Rifle Scope: Manufacturer: Ravin Objective Lens Diameter: 24 mm Magnification: 1 - 8 x Tube Diameter: 30 mm Finish: Fully multi-coated Brightness Settings: 10 Water Resistance Level: Waterproof Shockproof: Yes Fogproof: Yes Gun Type: Rifle Features of Ravin 1-8x24mm 30mm Tube Adjustable Turret LPVO Rifle Scope Fog and water proof Shock and recoil proof Fully coated lenses Red and green illumination Tube 30 mm. Package Contents: Ravin 1-8x24mm 30mm Tube Adjustable Turret LPVO Rifle Scope Yardage Tapes Ravin R162: 1-8x24mm Adjustable Turret Rifle Scope 30mm Tube Single Crosshair