Description: Standard 1/4" Screw Knob Universal. Compatible with Canon, Nikon, Sony DSLR Cameras, tripod monopod ball head quick release plate, flash hot shoe/cold shoe mount, microphone, GPS and other deviceS with 1/4" hole. Easy to install and remove. Good choice for photography lovers. High quality aluminum alloy for durability. Specification: Material: Aluminum Alloy Size: 2x1.8 cm/0.8x0.7 inch Package Includes: 1x 1/4" Thumb Screw Knob
