Unity Tactical REKE Diving Board 35mm Fits Unity Tactical REKE Anodized Finish Black. Available in 30 34 and 35mm ring sizes it places scopes at a 1.54" optical centerline from the rail. This height optimizes the host optic for common in-line night vision devices. REKE features a modular design that allows for capability expansion in the form of diving boards for laser range finders 12 o'clock MRDS mounts and 35 degree offset MRDS / accessory mounts. Specifications for Unity Tactical REKE REKE: Manufacturer: Unity Tactical Finish: Anodized Additional Features: Unity Tactical REKE Ring Case Finish: Anodized Blade Finish: Anodized Handle Finish: Anodized Features of Unity Tactical REKE: 1.54 to Optical Centerline" Package Contents: Unity Tactical REKE