Bi-Metal Hole Saw Cutter 1. High speed Steel teeth electron welded to a high Carbon steel body ensuring maxium durability and a long working life. 2. 4/6 variable pitch tooth design with improved chip clearance and lower feed pressure required with varying gullet depth. 3. Less heat build up ensures the teeth stay sharp longer. 4. Faster and more aggressive cutting performance. Using a cooling lubricant will extend the life of your hole saw by 500% 5. Bimetal Hole Saws with HSS teeth are rugged cutting tools designed to cut accurate holes in machinable materials up to 38mm thick. 6. Ranging in size from 14mm to 210mm in diameter, that can be used in portable electric tools, air tools, drill press, lathes, boring mills, milling machines and some other machines, which have rotating spindles. 7. The HSS teeth of our Bimetal hole saws are recommended for cutting steel, cast iron pipe, steel plates, aluminium, copper, brass, stainless steel, wood and plastic. 8. 14mm to 30mm diameter hole saw with 1/2-20UNF threaded connecting; 32mm to 210mm diameter hole saw with 5/8-18UNF threaded connecting. BI-METAL HOLE SAW FEATURES MATERIAL Cutting Tip is M42 Cobalt 8% and Body Material is 65Mn Steel ensures longest cutting life and quickest cutting CENTER PILOT DRILL BIT + ARBOR With Center Pilot Drill for Centering and Arbors screws into Hole saw for cutting. HEX SHANK Hex Shank of Center Arbor enables easy and tight chuck for various of tool holders. VARIOUS CUTTING APPLICATION Applied to cutting holes in various of materials, such as wood, plywood, firber board, steel, metal, plastic.... How To Use: Cordless Electric Drill Can Be used in Cordless Drill: Make sure the electric cordless drill is fully charged before application Corded Electric Drill Can be used in Corded Drill: Make sure the corded drill is plugged in before application Drill Press can be used in Drill Press: Make sure the drill press is plugged in before application. BI-METAL HOLE SAW Used for drilling gypsum board, plastic, wood, plywood, thin iron plate, thin stainless steel plate, thin aluminum plate, etc. Bi-Metal Hole Saw ●Size From 3/4" to 3" ● Cutting Tip Material: M42 -HSS Cobalt 8% Steel ● Body Material 65Mn ● Color Yellow ● Shank Type: Hex Shank ● Surface Treatment: Yellow Painted ● Specification Met: ANSI ● Packaging: Packed in Box ● Application: Cutting Holes in Plywood, wood, plastic, aluminum, Steel plate, iron plate...