Optiline Opti-Case Titan Croma Stainless steel mounting brackets.Compatible with smartphones with a diagonal length of 131 mm to 186 mm (5.2"- 7") and also with different thicknesses of the case, including 4 sets of adapters.Includes safety hook.Double locking system. Note! Optiline is a modular mounting system. An attachment must be purchased in addition to the holder. - Optiline Opti-Case Titan Croma Size