About: http://webisa.webdatacommons.org/384402075

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 blades may be composed of wear-resistant materials, such as ceramic, or may utilize wear-resistant inserts, and the housing bore in proximity to the blades may also be fabricated of wear-resistant materials.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es