9.Solutions Cold Shoe Clamp

The 9.Solutions Cold Shoe Clamp is a spring-loaded clamp that you can easily install with one hand. The thumbscrew serves both as a push button to open the clamp and to tighten it securely. The clamp fits standard cold shoes of 18, 20 and 22mm. The cold shoe clamp has 1/4"" and 3/8"" screw holes on the back.

Price: 8.99 from Wex Photo Video