OKW A 25 10 048 Round Combination Knob Ø10mm - Dust Grey Without I...

Black - A colour which does not emit any colour of the spectrum. Black absorbs all frequencies of the spectrum.

Grey - A colour often associated with old age (going grey)

Dust - A general term used for micro particles in the atmosphere

40mm - The equivilent of 4cm

Rotary - something that revolves around an axis, for example an engine.

Assembly - A gathering of people for a purpose e.g. a school assembly

Assembly - A gathering of people all together for the same purpose.

Ideal - Something that satisfies a perfect criteria.

Combination - The process of two of more things being mixed or combined together.

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