Hercules USP20CB Auto Grip Ukulele Clamp

The Hercules USP20CB ukulele clamp can accommodate ukes of all sizes, from soprano to baritone. The Auto Grip System safely locks the instrument in place. The fully adjustable clamp can be attached to any tube or desk within the following dimensions:15.8 mm�?0 mm (.62"�?.18") round tube 18 mm�?5.4 mm (.7"�?") square tube 10 mm�?5 mm (.39"�?98") thickness