About: http://webisa.webdatacommons.org/338340134

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	They can have blunt or pointed ends and are used for holding pulleys, gears, and other parts from turning relative to a shaft and to prevent loosening due to vibration.
http://www.w3.org/ns/prov#wasQuotedFrom	amazonsupply.com