The High Speed Steel drill bits are suitable for drilling through materials such as stainless steel, plastic, and wood. This size is suitable for drilling holes up to 20mm, which is ideal for commonly found 1/2inch threaded products in the home brewing industry. It can also handle hole sizes up to 22mm, making it a perfect choice for tap shanks measuring 5/8inch. For best results in stainless steel or metal make sure to drill slowly (less than 600prm). Use significant pressure when drilling and also use cutting lubricant to lubricate the cut but also keep the bit and metal that you are cutting cold. Specifications: Drill Speed: 200-800 RPMHole Sizes: 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm.Coating: Titanium NitrideSuitable for: Metal, wood, plasticTip: Self starting tip (no pilot hole required or center punch)
