Clamp mouth size can be adjusted by rotating the knob to fit for most phone and tablet pc. Help the replaced new screen in its right place, not bulge or sink.Make the screen to joint with the frame perfectly. Rubber padding inside help no chance to scratch your phone screen. Features: Versatile screen fastening clamp clip.Used to clamp your repaired device. and high quality.Quality Materials made, more and tougher than those in plastic., Weight: 0.82232423726 Pounds, Manufacturer: Wanjorlay