The ePMP Connectorized Radio Mounting Bracket has 4 x Screw 4.2x38mm, DIN 7982 C - Stainless Steel The Radio Mounting Bracket goes with 2 x Hose Clamp 50-70mm - Stainless Steel Allow ePMP Connectorized Radios (both GPS Synchronized and Unsynchronized versions) to be mounted to a pole or to a wall