Assertion: sprocket | /r/HasProperty | crafted
Facets:
value: from c45 steel
type: OTHER
value: from scm420
type: OTHER
Source sentences:
text: JT Sprockets is the only company that makes rear sprockets using ultra-durable C49 high-carbon steel, while their front sprockets are crafted from C45 steel and SCM420 chromoly steel alloy.