Tempered Glass Screen Protector Strength Test – Is it Really bulletproof?

This is a strength test of the Tempered glass screen protectors from ebay, which are apparently Bulletproof and Explosion- Proof:

http://www.ebay.co.uk/itm/100-Genuine-Tempered-Glass-Film-Screen-Protector-for-Apple-iPhone-5S-5-New-/161143703685?pt=UK_Computing_LaptopAccessories_RL&hash=item2584e9c885

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