Phone board is a modular mounting system for hands-free smartphone use in a tactical environment. Available in full size: 16,5 x 8,15 cm. Each item comes with a pair of extra large silicone rubber bands (for rugged smartphones), a standard spare rubber band and an Allen key. Periodically check screw tightness or apply threadlocker (Blue Loctite or similar) once height adjustments are complete. Do not expose Phone Board to excessive heat, including radiators, heaters or in hot cars.