About: http://webisa.webdatacommons.org/257941538

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	insert 18 may be made of metal, elastomer, plastic, or Teflon???, and is desirably made from metal such as brass.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com