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amy_casey40

K9 Crystal?

10 years ago
Is this knob plastic?? What is k9?
Clear 1-1/8" K9 Crystal Diamond Shape Cabinet Knob · More Info

Comment (1)

  • PRO
    10 years ago

    K9 is a Optical Borosilicate Crown Glass. It has very low inclusions and
    bubbles. It is used for lenses and prisms for lasers and optics. It has
    excellent physical properties and can be polished like leaded glass. It also
    weighs approximately 15% less than full (24%) leaded glass (crystal).

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