smlpdcbit STEEL TOOTH BIT #steel#tooth#bit Usually, carbide is applied to the working surface of the teeth to improve the wear resistance of the teeth, and carbide layer is applied to the back vertebrae to achieve the purpose of diameter preservation. ... moreSTEEL TOOTH BIT #steel#tooth#bit Usually, carbide is applied to the working surface of the teeth to improve the wear resistance of the teeth, and carbide layer is applied to the back vertebrae to achieve the purpose of diameter preservation. https://www.sml-pdcbit.com/products/steel-tooth-bit/less