About: http://webisa.webdatacommons.org/410005064

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	The collar 16 may also be made of such metal as aluminum, brass or steel and the outer surface is preferably knurled with longitudinal ribs as shown at 19 of Fig. 4.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com