Heavy Duty HSS Hole Saw Kit Drill Bit Set High Speed Steel Hole Cutter with Arbor Tooth Cutting Opener Drill Bit for Stainless Steel,Copper, Iron and Metal Plastic Drywall 15-50mm (12, Grey)

Features: Double metal hole with high quality High-Speed Steel material, durable, not easy to fall off the edge. Widely used in in stainless steel, mild steel, iron, copper and brass.Can drill about 20mm depth for the wood, and can drill about 5mm for the stainless steel and other opening operation. Pilot bit with 135° split point for fast, skate-free drilling.Slot design for easy plug removal. Applicable to the pistol drill, bench drill, vertical drilling machine etc.. Specification: Material: hss steel Package Included: 11* HSS Drilling Hole Saw Tips: Hole saw may become overheated and get damaged or even burned up due to fast rotary friction, we suggest customers to use cutting fluid to keep the hole saw cold during usage. Keep the drill be stable when drilling, otherwise the centre bit may get snapped due to excessive shaking. Start drilling with a slow drill rotary speed, or the centre bit may be shattered on first use. The larger the hole saw is, the slower the drill rotary speed should be, this way can protect the centre bit from getting snapped.This product is not easy to cut a relatively thin metal material, can be cutting within the 2-5mm stainless steel plate and the metal plate≤15mm

• 【SIZE】Size of these 12pcs hole saw: 15mm/0.59", 16mm/0.63", 18mm/0.71", 20mm/0.79",21mm/0.83", 22mm/0.87", 25mm/0.98", 26mm/1.02", 28mm/1.10", 30mm/1.81", 35mm/1.38", 50mm/1.97",
• 【DURABLE AND SAFETY】Construction of high quality High-speed steel for rust proof, much more durable and can offer a up to 50% longer life; great heat resistance
• 【EASY TO USE】 In the course of the use you can easily distinguish between different models. Improve your productivity. You can according to the size of different models to meet your different requirements, easy to use. Only need to be based on different models you can play the hole you need, whether it is large holes or small holes.
• 【WIDE APPLICATION】 Cuts quick, precise holes in stainless steel, mild steel, iron, copper and brass.Can drill about 20mm depth for the wood, and can drill about 5mm for the stainless steel
• 【SEPARATE PACKAGING】 Each drill has a separate packing for easy carrying and finding the required specifications, also avoiding them from impacts in transit.Every hole saws have a arbor with drill bit.