Size: Hole Saw Total Length: 3.5 inches (90 mm), Cutting Diameter: 3.9 inches (100 mm), Blade Thickness: 0.05 inches (1.2 mm), Shaft Diameter 0.4 inches (10 mm), Center Drill Diameter 0.2 inches (6 mm)
Material: The blade portion of this 3.9-inch (100 mm) hole saw is made of high-quality bi-metal, a metal with enhanced sharpness, corrosion and abrasion resistance, and is highly durable.The center drill and shank are made of high-quality M42 high speed steel, a material with excellent cutting performance and material toughness.
Feature 1: For the bi-metal, high-quality high-speed steel (M42) is welded with strong spring steel using an electron beam, resulting in high cutting performance. The combination pitch reduces vibration during drilling and allows for precision processing.Feature 2: The HSS center drill comes with a spring which reduces the hassle of drilled scum from having to be manually removed, as well as reduces the amount of shock delivered during penetration. This reduction in shock prevents damage to the blade and ensures drilling safety.
Applications: For drilling holes into drywall, plastic, wood, plywood, thin steel sheets, thin stainless steel, thin aluminum sheets, etc.For plumbing work, electrical work, and various drilling jobs, from professional workplaces to a wide variety of DIY projects.Compatible Devices: Electric drills, rechargeable drill screwdriversIf precision is required, use a drill machine or drill stand to drill holes.
Caution: Please start the cutting process from a low speed rotation.Always remain perpendicular to the material.Do not tilt the drill in the middle of the process.When cutting through metals, it is recommended to apply cutting oil or water when using.Wear protective gear such as goggles and a mask during use.