YZ6030: High hardness, used for processing steel parts below 45 degrees. YZ15TF: Used to process stainless steel and reduce tool breakage. JC600: High hardness, Used for processing steel parts. Not easy to stick tools, more smooth chip removal.
The cutter bar is hardened and durable. Imported matrix, tool rod imported 40Cr material. No insert : there is only one tool bar and wrench in the package. No Cutter bar : There are only 10 blades in the kit.
If you choose both blade and holder, you will receive 10pc blades, 1pc holder and wrench.