The faithfull 51mm varipitch bi metal hole saw is perfectly sized for plumbing work, electrical installations, and recessed lighting applications. This 51mm holesaw is ideally suited for drilling holes for waste pipes, installing downlighters, creating openings for standard plumbing fixtures, and general construction work requiring clean, precise holes. Manufactured from bi metal material with 8% cobalt content, this 51mm holesaw provides exceptional heat and wear resistance, ensuring consistent performance throughout its extended service life. The precision set teeth deliver aggressive cutting action with superior swarf clearance, maintaining smooth, fast progress through various materials and thicknesses. The 51mm holesaw cuts efficiently 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 effectively, making it essential for plumbers and electricians. Features and benefits bull 51mm diameter ideal for plumbing and downlighter installations bull 8% cobalt bi metal construction for exceptional tool life bull precision teeth for aggressive, clean cutting bull wide material compatibility for diverse applications bull variable speed drill compatible specifications size mm 51 material bi metal pitch variable cutting depth 38mm diameter 51mm