Gomadic Air Vent Clip Based Cradle Holder Car / Auto Mount suitable for the HTC Thunderbolt Spring loaded vent clips designed to accommodate both horizontal and vertical oriented air vent systems. Gomadic Holder is highly adjustable with sliding/rotating mechanisms on side and bottom ensuring easy access to all HTC Thunderbolt buttons and controls. A vent mounted cradle base for use with the HTC Thunderbolt device. Holder is designed to adjust to accommodate the exact required dimensions (122.6 x 66.8 x 13 mm). Heavy Duty foam pads (0.5 inch thick) line grips on side of holder. Made with high density construction compress to secure device when in use. Specifications: Holder Base: (2.5 X 4.0 inches in closed position. Highly expandable), Vent Mount (2.0 x 2.5 inches), Weight (Base 4oz., Mount 2oz.)