TrewTungsten® Hard Metal is a
special type of Tungsten Carbide,
the world's hardest metallic substance.

Bands made of this high tech metal
will retain a polish longer than any
other metal; it measures between
8 and 9 on the Mohs hardness scale.

Sapphire; the hardest of the colored gemstones is 9 on the Mohs scale.

Fine Swiss watch makers have
used a similar type of Tungsten
Carbide in their wristwatches for
nearly 40 years.

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