TheBogen 3270 system lets you adapt any tripod or accessory to use Manfrotto RC4plates- 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 RC4plate has a 1/4″ bolt for camera attachment. Includes one base and one RC4plate. This is the Bogen-branded equivalent of the Manfrotto 345.