General description M42 Bi-Metal Hole Saw Drill Bit Set designed for heavy-duty cutting through various materials including aluminum, stainless steel, wood, and plastic. This set is ideal for professionals and DIY enthusiasts looking for reliable and durable hole saws. Technical specifications Blade diameter: 80mm Hole depth: 38mm Connecting rod length: 95mm Thread diameter: 15mm Shank diameter: 10mm Material: M42 HSS