On Wall Mount Holder ,with Anti Theft Security Lock and Key, Rotate Design Arbitrary Adjustment,Multi Angle, Horizontal and vertical screen adjustment,Strong and stylish aluminum kiosk, predrilled holes in base for secure Wall or installation. lock keeps tablets secured inside the fixed frame,the locking protects tablet from theft. The clip is made of aluminum, the support adapter is made of iron, and there are a few plastic parts in the adapter. Each accessory package contains set screw and key (the same batch, the key is universal). For most 7-10.4inch tablets but not all (Diagonal length 210-300 mm & thickness is less than 10.5 mm). include And Use for Mini iPad 7.9"&8.3", 9.7",10.2",10.5",10.9",11", Galaxy Tab.& Other brand.