About: http://webisa.webdatacommons.org/246758887

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	Thus, the material of the retractor 30 on either side of the perpendicular bend B is made from rigid metal, such as stainless steel.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com