Kondor Blue KB-501ABP-QR-BK 501 Quick Release Receiver And Plate (Raven Black)We took our 501 Baseplate back to the drawing board to give it a complete overhaul to add in some much needed functionality. At the top of the list was to get as many of our camera cages to 85mm sensor to rail center offset for matte box compatibility. There are many height adjustable baseplate options, but most start off too tall, mitigating the need for vertical height adjustment. Its also easy for them to become loose and wobble or slip during a