Detailed description:

• Premium tempered glass pane only 0.3mm thin
• Degree of hardness of 9H (9H degree of hardness 9 = corundum (sapphire) grinding hardness 1000 according to Rosiwal only the diamond is harder = 10H)
• rounded edges and corners.
• High quality
• Fit 100% on any existing model
  
• easy attachment of the glass panel and simple removal without residue
  
• Touchscreen protection against wear and tear and Krazer, spit protection
• No manipulation of the touchscreen
• Please note that this film was made of hardened real glass and that 1-2 mm of space was deliberately left to the edge of the smartphone.
  The smartphone displays are slightly rounded and therefore the film cannot lie there, this distance was deliberately kept.
  
  Note for models: All Samsung Edge and visibly rounded models from other smartphone manufacturers have a protective glass only on the front surface,
  the rounding is not protected 
   
  

included :

• 1x hard glass pane on adhesive dust strips
• 1x alcohol cloth packed
• 1x micro dust cloth

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Information: Use alcohol cloth to clean "before" applying.

You can find more tips for attaching your tempered glass in You Tube.

Extract from Wikipedia:
Tempered glass is a type of glass in which mechanical stresses are specifically created in the material through heat treatment
and thereby the breaking strength against mechanical or thermal stress is increased.

The finished glass workpiece is heated in an oven and then quickly cooled.
As a result of this quenching, the surface solidifies and the external dimensions of the component now only change comparatively little.
However, the warmer core continues to contract even more, as the thermal expansion above the transformation point is significantly higher than below it.
This creates a permanent stress field in the component: a ball is preloaded both radially and tangentially,
a plate is under compressive stress on its surface, while a neutral fiber runs in the middle under tensile stress.

Thanks to this frozen pre-tensioning, the tempered glass can compensate for significantly higher tensile loads than untreated glass.
Since the compressive strength of glass significantly exceeds the tensile strength, this represents an overall improvement.
However, a workpiece treated in this way can then no longer be cut non-destructively as is possible with untreated glass.
be ground or broken. In the event of glass breakage, the component disintegrates into small crumbs.

Tempered glass is used wherever increased mechanical or safety requirements are placed on glass,
for example:

• Window panes on vehicles (car side windows (toughened safety glass), front windows are laminated safety glass)
• Pressure-resistant viewing panes
• Glass furniture
• All-glass doors
• Diving masks
• Touch screens