The adult mites are 0.3–0.4 mm (3⁄256–1⁄64 in) long. Each has a semitransparent, elongated body that consists of two fused parts. Eight short, segmented legs are attached to the first body segment. The body is covered with scales for anchoring itself in the hair follicle, and the mite has pin-like mouthparts for eating skin cells and oils that accumulate in the hair follicles.
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The mites are transferred between hosts through contact with hair, eyebrows, and the sebaceous glands of the face.
https://en.wikipedia.org/wiki/Demodex
My fave parts (edited for brevity):
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Ohhh good.
Who uses inches at this scale? I mean, really, Wikipedia.
"Hand me my 1/256th inch ruler." --nobody