Adjustable Strap Clamp 1.5 in Ball Base

RAM Mounts RAM-108B-246U Ram Adjustable Strap Clamp 1.5" Ball Base with Medium Length Double Socket Arm and Square Base with VESA (4x 75mm) (4x 100mm) Plate. The strap will accommodate rails from 1" to 2.1" in diameter. Included is a rubber protection strip to help reduce vibration and to prevent scratching of the mounting surface. The 4.75" square plate contains 4x100mm holes and 4x75mm holes in each corner