Brilliantine

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Brilliantine /ˈbrɪljəntiːn/ is a hair-grooming product intended to soften men's hair, including beards and moustaches, and give it a glossy, well-groomed appearance. It was created at the turn of the…

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Sprag clutch

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A sprag clutch is a one-way freewheel clutch. It resembles a roller bearing but, instead of cylindrical rollers, non-revolving asymmetric figure-eight shaped sprags, or other elements allowing single direction rotation,…

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