DF07019 high carbon steel hole saw hole saw,high carbon steel,hardened teeth,safety ... life, cutting depth 25mm DF07019 high carbon steel hole sawhole saw,high carbon steel,hardened teeth,safety and ... life, cutting depth 25mmProduct name: High carbon steel hole saw*high carbon steel, hardened teeth, safety and ... :25mm;*can be used for cutting wood, wall board, plastic and soft metals DF07019 high carbon ...