1、Adopt aluminum alloy, CNC precision machining, hard anodized surface treatment, hard split design. Stainless steel camera screws. Two standard 1/4'' screw holes at the bottom plate, convenient for installation and connection of different ball head. 2、Lightweight hollowed-out design, fixed camera 1/4'' screw can also be tightened by coin, with insurance screw at quick release plate reverse side. A standard 1/4'' screw hole at the vertical shooting plate, convenient for installation and connection of different ball head. 3、After installing, not affect the opening of the data port and the plug-in and unplug of the shutter release and microphone cable. Screw hole and straps hole are reserved at the bottom and vertical shooting plate. 4、Adopts 39mm standard AS interface, support for IS-QJ64/ JZ50 and IS-QJ58 ultra-thin ballhead, also compatible with standard AS interface ballhead, such for RRS/ARCA-SWISS/Wimberley/MARKINS/SUNWA/kangrinpoche/BENRO/SIRUI, etc. 5、Suitable for Sony A7/A7S/A7R mirrorless camera. Item type: L-shape Quick Release Plate Condition: 100% brand new Material: aluminium alloy Weight: Approx. 109g Applicable model: for Sony A7/A7S/A7R Mirrorless Camera Size(length x thickness x height): Approx. 139x15x75mm/5.5x0.6x3in 1 x Quick Release Plate 1 x Inner hex wrench