2" wide Arca compatible quick release plate and 1/4" to 3/8" adapter unlike any other. No more coins, Allen wrenches or pesky D-rings. Just spin this into your camera tripod socket, or, for that matter, any 1/4" – 20 socket, and you can quickly load your device onto a tripod head with an Arca type clamp. Underneath the desk is a stainless steel 3/8" socket enabling this disk to be used as an adapter to downsize a 3/8"-16 bolt on our Platypods, the Platypod handle or any tripod. See our website/video for the full story and learn how this little piece of equipment can be indispensable for your photography. We have included a precise bubble level to accurately level Platypods prior to mounting ballheads with panning bases (used in multilevel panoramas). It can also be used to calibrate the electronic level on the amazing Platyball Elite.