Hole Saw Set, 5PCS HSS Cobalt Core Drill Bits Ø16/18.5/20/25/30mm, High Speed ​​Alloy Steel Hole Saw, Steel, Stainless Steel, Suitable for Wood, Plastic, Metal-LIAIKI

【SUPERIOR MATERIAL】 High-speed steel (HSS) hole saw, which boasts high hardness and wear resistance.It can be perfectly installed on locks, knobs on doors and cabinets, or larger diameter holes.Also suitable for bench drills, electromagnetic drills, pistol drills, and impact drills.It is also suitable for stainless steel plates, square tubing, iron, cast iron, wood, etc.Product DescriptionHigh-speed HSS hole saw - your high-performance life assistant.Premium materials.High-speed steel hole saw with special heat treatment, sharp cutting edge, high strength.High strength, high precision.Its safe and high-quality material means you don't have to worry about product quality or health issues.Features:Material: HSS6542.Hardness: HRC 65.Surface Treatment: Titanium coating.Type: Hole saw.Hole saw diameter: 16 mm, 18.5 mm, 20 mm, 25 mm, 30 mm.Shaft diameter: 8 mm.Hole saw blade length: 65 mm.Package weight: 308 g.Application: Widely used in bench drills and electric drill chucks for machine tools, etc.Warning and Precautions:1. Use oil or water to lower the temperature before drilling hard materials (such as steel, stainless steel, etc.).Otherwise, the drill bit may break at high temperatures.2.Wear safety glasses to protect your eyes; please wear a protective mask when working upwards.3.Please wear earplugs when you need to work for extended periods to reduce the impact of noise.4.Remove the rust-preventative oil after use for a longer lifespan.5.Please select a lower speed when making continuous cuts.6.Please do not allow the edge of the hole saw to make a violent or strong impact during cutting to prevent the blades from breaking.7.Please use coolant when working on hard materials.8.There may be a slight difference in weight and