The faithfull 20mm varipitch bi metal hole saw is a popular diameter size perfect for electrical installations, plumbing work, and general construction applications. This 20mm holesaw is ideally suited for drilling standard electrical conduit holes, installing cable glands, creating mounting points for common fixtures, and general purpose hole cutting in multiple materials. Constructed from bi metal material with 8% cobalt content, this 20mm holesaw delivers exceptional heat and wear resistance, ensuring reliable performance throughout its extended service life. The precision set teeth ensure aggressive material penetration combined with efficient swarf clearance, providing smooth, rapid cutting action across diverse applications. This 20mm diameter holesaw cuts effortlessly through stainless steel, steel, aluminium, sheet metal, mild metal, non ferrous metals, cast iron, soft and hard woods, and pvc. Suitable for most variable speed power drills, it handles both thin and thick gauge materials with precision, making it essential for everyday trade work. Features and benefits bull 20mm diameter for standard electrical and plumbing work bull bi metal with 8% cobalt for superior tool life bull precision set teeth for efficient, smooth cutting bull versatile across metals, woods, and plastics bull compatible with variable speed power drills specifications size mm 20 material bi metal pitch variable cutting depth 38mm diameter 20mm