About: http://webisa.webdatacommons.org/419221786

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	It comprises a hollow shaft 70 provided with a head 71 having an opening 72 leading to the outsided and intended to cooperate with a clamping tool, for example a hexagonal opening.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com