TOP MATERIAL: This bimetal hole saw blade is made of high-quality HSS high-speed steel, which is sharp, corrosion-resistant, wear-resistant with enhanced heat resistance and greater product life QUICK CUTTING: The hole saw makes the cutting smooth, deep into various materials and with light vibration; It requires arbors with an extended length pilot drill IN-DEPTH CUTTING: The deep cut saw features an increased hole saw depth of 51mm (2″) and is ideal for cutting metal of more than 3mm thickness, tubes with a wall thickness of greater than 3mm and wood up to 51mm (2″) thick COMPATIBILITY: Our hole saw comes in different sizes, compatible with many manufacturers' power tools; This hole saw is perfect for jobs that require high performance and precision to meet all your needs PERFECT SIZE: 19mm – 210mm (3/4″ – 8.9/32″) Available in various diameters covering the most popular hole saw sizes on the market PERFORMANCE: The sharp teeth of the hole saw are perfect for hole cutting in metal inox, non-ferrous materials, and cast iron; It is highly recommended for wood, and can also be used for veneer, plastic, acrylic, fibreglass, formica, plaster, and suspended floors; Note: not recommended for hardwood, hard metal, and stone Please Note: This Deep Cut hole saw does not include the Arbor and Pilot drill."