Crystal Quartz
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[Clear]
Contains little graphite (carbon, graphite) and is a color close to clear.
1pc Size: Approx 10.5-18x10-13x8-10mm
[Black]
Contains a lot of graphite (carbon, graphite) and is a color close to black.
1pc Size: Approx 13-21x10-13x6-10mm
Hole size: Approx 0.8-1mm