Vitrex 102812 Porcelain Diamond Drill Bit 12mm

Marble - A type of rock varying in colour. Commonly calcite or dolomite

Diameter - A measurement across a circle passing through the middle

Porcelain - A ceramic material

Glass - A solid, typically transparent. Brittle and used in windows. The first patent granted in the UK was for Glass.

Ceramic - A hard material with excellent heat resistance made by heating a crystaline substance such as clay

water - A chemical substance. Chemical formula H2O.

soap - The salt of a fatty acid used for cleaning and as a component of lubricants.

Ideal - Something that satisfies a perfect criteria.

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