Attaches camera, binocular, scope, etc to railings, roll bars, handlebars, etc.. Fits any device with a 14-20 tripod screw. Utilizes a unique ball and socket head for quick and easy adjustment. Durable aluminum clamp body and screw securely holds loads up to 6lbs. Choose between three sizes to accommodate objects from 0 to 4 inches. Use Pedco UltraClamp Assemblies to solidly attach a camera, binocular or scope to a wide range of objects such as a car window, bicycle handlebar, picnic table, etc. Strong enough for any camera or camcorder, the UltraClamp Assembly utilizes the same ball and socket mount found on Pedco Ultra Pods to allow maximum flexibility in framing the subject. Original UltraClamp attaches to objects from 0 to 1.5 inches thick and UltraClamp 2.5 attaches to objects from 1 to 2.5 inches thick. UltraClamp 4.0 expands to 4 inches and offers the additional flexibility of attaching the mount to the top or side. Weights 5.5 oz (1.5), 6.5 oz (2.5) 9.9 oz (4.0).