About: http://webisa.webdatacommons.org/423371529

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	These spacers may also be configured to have the surface features described above, including grooves, threads and/or an instrument attachment hole defined by a tool engaging end.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es