Specification: Base Size(L x W x H): Approx. 38 x 29 x 35mm / 1.5 x 1.1 x 1.4 inch Total Height: Approx. 20cm / 7.8 inch Clamping Hole Diameter: Approx. 8mm Trademark AGPtek products are marketed exclusively by Brainydeal, any misuse of AGPtek without prior approval from AGPtek will take legal action.