The 15mm Platform for Blackmagic Cameras from Wooden Camera is the base unit included with the Quick Cage (BMC)+LW, Quick Base (BMC), Quick Base (C100, C300, C500), Quick Base (FS700), Quick Base (F55, F5), Quick Base (Ikonoskop), Quick Base (Phantom Miro), Fixed Base (C100, C300, C500), and Fixed Base (F55, F5).1/4"-20 and 3/8"-16 holes to attach to tripod or bridgeplate.