The composite glare shield, yoke mount is ideally suited for a day on the wing and yet easily removed for travel in the flight bag. Modular in design, switch out the clamps for a perfect fit no matter what the mounting surface. Crafted to hold firm to most glare shields, yokes, or tubing, practically any aircraft can benefit from this product. Simple to use and exceptionally versatile, RAM has created another "must have" for any pilot. The composite glare shield, yoke mount will fit a rail or edge lip from 12,70 cm (5")/20,32 cm (8") to a maximum of 1 2,54 cm (1")/10,16 cm (4") . The mounting base can also accept a second ball (RAP-B-121BBU) giving you the ultimate double ball base. To mount the base, simply place the clamp ends around the rail and then screw the large knob at the end of the threaded rod. The hand tightened clamp makes this the perfect mounting system for your airplane.