SmallRig Universal 15mm Rail Support System Baseplate 2272 is a dedicated baseplate designed for mirrorless and DSLR cameras. It is height-adjustable to ensure different cameras sit on the baseplate complying with the LWS standard. Simply unscrew the wingnut on the side, adjust the height and tighten the wingnut. On the top are Arca compatible QR plate and receiver; attach the QR plate to SmallRig cage or camera tripod socket, drop it in to the receiver and tighten the knob screw. The baseplate holds SmallRig 15mm Rods 1053, where accessories like SmallRig Lens Support 2152, SmallRig Shoulder Pad 2077, Matte Box and follow focus can be attached. Additionally, there are multiple 1/4"-20 and 3/8"-16 threaded holes on the bottom of the baseplate so tripod plates can be attached.