Really Right Stuff Cinch-LR Polymer Binocular Adapter The RRS Cinch-LR Binocular Adapter provides quick-release functionality to your binocular/monocular of choice for housing diameter ranges between 1.77"-2.56". Designed in Lehi, UT. The Cinch-LR is a semi-permanent clamp mount, meaning that it can be left on the binocular when not mounted to a tripod. Fits in most supplied chest harnesses. The dovetail is molded into the base, allowing most tripod users to quickly attach and detach their optic from multiple ball head manufacturers. If using a standard other than the RRS dovetail standard or the Manfrotto RC2 Dovetail, there is a 1/4"-20 mounting socket on the bottom of the Cinch-LR to adapt to a system of your choice. The Cinch-LR can be mounted perpendicular or parallel to the optical plane. The removable strap can be fed through the buckle with the excess strap exposed on the outside, or reversed with the excess following the contour of the optical housing. The Cinch-LR is polymer molded with a durable glass filled nylon, built from the ground up for maximum functionality, performance, ruggedness, ergonomic fit, and finish. Features: - RRS 1.5" Standard Dovetail - Manfrotto RC2 Dovetail - Detachable strap for open or closed bridge binoculars - Compatible with 1.77"-2.56" / 45mm-65mm overall diameter (not lens size) - Polymer molded - Durable Glass Filled Nylon - 1/4"-20 threaded mounting socket Specifications: - Type: Binocular Adapter - Material: Polymer - Length: 2.64"/ 67mm - Width: 1.67"/ 42mm - Height: 1.98"/ 50mm - Weight: 1.6oz/ 45g