About: http://webisa.webdatacommons.org/316637531

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	A tapping head is a drill or milling machine attachment used to cut threads of a nut.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.com