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Bolt-on
From WikiPedalia
Slang term for a non-quick release hub or axle. More properly, these should be referred to as "nutted" or "solid-axle" units, since conventional hubs use nuts, not bolts.
A very few high-end hubs actually do use bolts, usually with an Allen head. Among these are American Classic, Bullseye, Phil Wood and White Industries.
