Our 21mm HSS hole saw cutter is engineered for precision drilling of 1/2” BSP male thread holes—ideal for water butt fittings—and effortlessly cuts through metal alloys, wood and plastic.
Manufactured from high-speed steel, this cutter offers exceptional heat resistance and durability for consistent performance in demanding applications. The sharp, evenly spaced teeth ensure smooth cutting with minimal effort, delivering clean, accurate holes without damaging surrounding material.
Designed for stability and reduced vibration, the robust bit attaches easily to standard power drills. Whether you’re installing plumbing, crafting bespoke projects or undertaking general repairs, this versatile cutter provides reliable results every time.
Key Features
21mm Diameter – precision drilling for a perfect fit
HSS Construction – superior heat resistance and longevity
