The Custom Brackets Camera Quick Release Receiver (QR-C) is a must for taking full advantage of the Custom Brackets bracket systems. This system will allow you to quickly mount different camera makes & models (with different heights) to your bracket. The QR-C requires a Camera plate (any camera mount) & the C-SP Camera Quick Release Subplate (One C-SP for each camera plate). The QR-C Camera Quick Release is compatible with all digital & 35mm Camera Rotating brackets from Custom Brackets.