The RAM Quick-Grip™ device mount is capable of holding a broad range of electronic devices. The spring loaded mechanism and the adjustable side keepers allow for a secure grip on your device. Whether it is a cell, GPS, blue tooth speaker or anything that will fit in the dimensions of the cradle, your electronics will be secure. Included is a B Size 1" ball and hardware. Some assembly required. Cradle Clamping Dimensions: Height Range: 4.75" - 5.75" Width Range: 2.19" - 3.25" Max Depth: 0.72"