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The CD40 40 mm Back-to-Back Quick Release Clamps from ProMediaGear are two Arca-Swiss type compatible 40 mm clamps that mount at either 90º or 180º to each other. Together they can be used for paralax offset or other slide rail applications; they can also be used separately. Precision machined aluminum alloy instruments, they provide a hard coated black anodized surface and nickel-chrome plated insert to ensure that the threads remain in good condition. The clamps include 1/4"-20 and two 3/8"-16 inserts as well as mounting screws, wrenches and pins.
In the Box
ProMediaGear CD40 40 mm Back-to-Back Quick Release Clamps