150mm hole saw size: cutting diameter: 150mm; outer wall diameter: 160mm; hole depth: 30mm; center drill diameter: 6mm; center drill length: 60mm; tool holder diameter: 10mm; total drill bit length: 80mm.<br> <br> Porous design: The wood hole saw adopts a porous design, which can quickly remove chips and improve the efficiency of hole opening. It is specially designed for wood/plastic cutting.<br> <br> Precision positioning: The hss bi-metal hole saw group has a center drill bit for center positioning and precise drilling. Put the spring on the drill bit, and the hole saw can be automatically pushed out immediately after the drilling is completed.<br> <br> High performance: The drill bit heavy duty hole saw is made of heat-treated M42 bimetal with sharp teeth. It not only has good corrosion resistance, stability, abrasion resistance, but also has a fast drilling speed.<br> <br> Widely used: Bimetal hole saw can be used to punch holes on soft metal plates such as wood, plastic, thin steel, stainless steel, and aluminum alloy.