Assertion: cleat's projection | /r/MadeOf | material
Facets:
Source sentences:
text: 212 a (and/or forward shaped insert 220 a) is formed of hardened steel and the other one of the forward cleat retainer 280 a and the forward projection 212 a (and/or forward shaped insert 220 a) is made of a material that has a measure of hardness that is greater than hardened steel.