PERFORMANCE: Fast Cut Bi-Metal Hole Saws contain an extra cobalt HSS tooth material, and a new 5.5 TPI positive rake tooth design ensuring a smoother and faster cut PRACTICAL: HSS teeth and a non-binding clean edge design ensure a smooth, clean, and fast cutting hole saw blade; Sharp tooth shape and durability make this bimetal hole saw one of the best on the market EFFICIENT: Specifically suited to cutting up to 3mm stainless and mild steel sheets, the fast cut will also cut through tubes with a wall thickness of up to 3mm (1/8”); Get 41mm (1.5/8”) hole saw depth EASY TO USE: Make sure the hole saw wears the wood surface as you insert it; Slowly cut into the material with the saw when it starts to cut; As soon as the hole saw passes through the other side of the wood, stop the drill WIDE APPLICATIONS: Specifically designed for cutting stainless steel, metals, and mild steel sheet, the Fast Cut Saws will cut through wood, plastic, plaster, and other materials; Recommended cutting depth - up to 13mm (1/2”) in softer materials PERFECT SIZE: Available in various diameters covering the most popular hole saw sizes on the market with 30% extra gullet volume for better material penetration; Ideal for a wide range of interior works, woodwork, metalworking, plumbing, electrical work, professional workplaces, and DIY projects; Sizes available: 14mm – 210mm Please Note: This Fast Cut hole saw does not include the Arbor and Pilot drill."