Insert-Pro 延長テノンヘッド用 ベベル&ラジアス交換ナイフ

I’ve put these through a full day of shaping white oak and they still cut clean with no chipping. The C4 sub-micron carbide really holds an edge—way less frequent trips to the sharpener than my old brazed cutters.

Installed these on my Insert-Pro head and they trimmed down the chatter I was getting with the old brazed cutters. The sub-micron carbide feels noticeably more dense during the cut, and after a full day of shaping red oak they still look sharp.

I was a bit skeptical about spending more on carbide, but the C4 sub-micron grade on these knives cut through hard maple like butter. The fit on my Insert-Pro tenon head was perfect, no slop at all.