Gomadic Bike Handlebar Holder Mount System suitable for the HTC Rezound - Unique Holder, Lifetime Warranty Perfect for bikes (street or mountain) and also works great on motorcycles, ATV, 4-wheelers, golf carts, baby strollers, snowmobiles and more! Cradle attaches to handle bars of any bike with tube diameters ranging from 1/2 - 1 1/8 inch (13-28mm). Unique rubber ribbed clamping system connects without the need of tools. Bike handlebar mounted base for the HTC Rezound device. Cradle is designed to accommodate the specific dimensions (129.4 x 65.7 x 14.15 mm). Specifications: Holder Base: (2.5 X 4.0 inches in closed position. Highly expandable), Handlebar Mount (13-28mm tube diameter), Weight (Base 4oz., Mount 2oz.) Rotational joint on handlebar mount provides both landscape and portrait viewing modes.