Manfrotto Hex-Plate Quick Release System slide Standard 1/4" threaded hole for

Standard 1/4" threaded hole for bottom-up mounting

The clamp doesn't lock

You then turn the actual focus ring to match this setting

It does not go underwater

Worth noting that the light is not exactly neutral

Manfrotto Hex-Plate Quick Release System slide Standard 1/4" threaded hole forThe Manfrotto hex plate Quick Release system lets you adapt any tripod or accessory to use Manfrotto hex plates a great solution if you're working with bigger cameras. The QR system base attaches via either 1 4" or 3 8" inner threads; the hex plate has a 1 4" fitting. In excellent condition, with light paint wear. Includes one base and one hex plate.