Fits tabletops desk, etc. from .2 inches to 1.75 inches (5mm to 44.5mm) thick.Fits rails, bars, handlebar or post .25 inches to 2 inches (6.5mm to 51mm) in diameter.
Clamps onto handlebars and posts .25 - 2 inches in diameterAlso clamps into tables, desks, and counters .2 - 1.75 inches thickCompatible with 25mm ball pattern holders and adaptersIncludes optional removable security knob2 year limited warranty