NOVOFLEX focusing racks are indispensable accessories for macro and stereo photography. They can be mounted on any tripod and on the NOVOFLEX MS-REPRO macro reprostand. The CASTEL-Q comes with Arca size dovetail clamping and was designed to fit the NOVOFLEX Q=BASE II and Q=MOUNT quick-release units. It can also be mounted on any tripod head with 1/4â€-20 or 3/8â€-16 thread. The CASTEL-QP’s clamping runs parallel to the rail, and as such CASTEL-QP is the perfect add-on to any NOVOFLEX Bellows BALPRO 1, BALPRO T/S, BAL-F, as well as our Auto-Bellows. Also, macro lenses with a tripod collar and a longer coupling plate underneath will benefit from CASTEL-QP.