32 pieces per box. Black Rainbow Carbide Box.
Package dimensions: 9.5″W x 9.5″L.
Black Rainbow Carbide (also known as Carborundum and Silicon Carbide) is a compound of silicon and carbon. It occurs in nature as the extremely rare mineral moissanite. This mineral in its powder form has been mass-produced since 1893 for use as an abrasive. Electronic applications of silicon carbide such as light-emitting diodes (LEDs) and detectors in early radios were first demonstrated around 1907!
Black Rainbow Carbide Box
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