Lanxri 12" Dovetail Plate and QR Baseplate with Double Rod Adapter for 19mm Studio Product Highlights 12" Dovetail Plate 19mm Studio Quick Release Baseplate Features 1/4"-20 and 3/8"-16 Threaded Holes Comes with a 1/4"-20 and 3/8"-16 Low Profile Screws Safety Pin for Additional Security Aluminum Alloy Construction Product Description This 19mm studio baseplate and 12" dovetail plate unit is designed to work with a wide range of cameras. It allows you to mount accessories such as follow focus systems and matte boxes via 19mm studio rods. The baseplate features rod clamp compliance with 19mm studio standard rod spacing (104mm Center to Center). It also features a brake that enables an instant quick lock or release of ARRI standard dovetail plate. The dovetail plate features a safety pin and a screw stopper to avoid accidental falls of the camera. The 1/4"-20 and 3/8"-16 mounting points featured are convenient for attachment of additional accessories. Net Weight: 905 g You Get: 1 x 12" Dovetail Plate 1 x 19mm Studio Baseplate 1 x Allen Wrench Before you place an order, please provide me with English information to facilitate our delivery and logistics