9Pcs HSS Bi-Metal Hole Saw Set in Plastic Box for Cutting Metal Wood Plastic

6Pcs Hole Saws: 22mm, 29mm, 35mm, 44mm, 51mm, 68mm (7/8", 1-1/8", 1-3/8", 1-3/4", 2", 2-11/16")

1Pc Small Arbor: 3/8" Hex Shank and  1/2"-20UNF Thread  for Dia. 14mm to 30mm Hole Saw

1Pc Large Arbor: 7/16" Hex Shank and 5/8"-18UNF Thread  for Dia. 32mm to 210mm Hole Saw

1Pc Thread Adapter: Adapt Arbors with 1/2"-20UNF Thread to Fit Hole Saws with 5/8"-18UNF Thread

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.