Lanparte 4*4 & 4*5.65 Camera Carbon Fiber Matte Box V2

Specifications
1.camera matte box 
2. Two 360 rotatable filter holder 
3. Swing open function 
4. Height adjust

4*4 & 4*5.65 camera carbon fiber matte box  
This deluxe, professional quality carbon fiber matte box allows you to control unwanted glare and lens flare from your shots.   It also provides a means of using filters.  The unit is compatible with any industry standard 15mm rail system.
This deluxe model is larger than the standard model, and is constructed from ultra-tough, lightweight carbon fibre.
The kit includes one French flag, and two adjustable side wings.  Each of the three flaps can be positioned and locked in place so as to suit different focal lengths by providing the maximum amount of shading without getting in the way of the shot.
A set of 4 "donut" rings are included.  By fitting one of these rings, light from the rear of the matte box can be blocked out, leaving only the camera lens protruding through. Donuts are slightly flexible, and the four sizes range to fit almost any lens diameter.  This deluxe model also includes a set of "nuns knickers", used to further prevent any light entering the lens from the sides.
The two included filter holders are designed to fit standard 4"x4" filters.  The filter holders are both rotatable, perfect for polarising filters.  Locking knobs secure the filters in place.
For changing lenses quickly, the unit features a swing away arm, which locks away at a 90 degree position.  Thanks to high build quality and tight tolerances, the locked away position is surprisingly sturdy.