Assertion: axle | /r/HasProperty | hollow
Facets:
value: sometimes
type: DEGREE
Source sentences:
text: With a traditional non-through axle, there's a slot at the bottom of the fork (or the dropouts), the axle is hollow, and there is a skewer through axle.
text: Sometimes the axle is hollow to allow for use of a quick-release system, though traditionally solid metal axles have been used for strength and rigidity.