Fortunately there are 6 protection: one of them was beveled, therefore unusable. It took three guards to get in edgewise. If you install it as is, the vertical edges exceeding the protection is not applied correctly. Having placed a, I used a cloth to bezel to remove bubbles: result striped! Finally, I re-cut protection and I installed it. By cons, it also has scratches after the bubbles operation. Conclusion: it is not expensive but not worth more.