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."