8Pcs Rotary Drill Saw Blades, Steel Saw Disc Wheel Cutting

Product Overview

The 8Pcs Rotary Drill Saw Blades are high-performance cutting discs designed for precision work across a variety of materials. Ideal for users of rotary tools such as Dremel, these saw blades deliver clean, efficient cuts in aluminum, brass, copper, wood, and plastic. Built with advanced heat treatment and air hammer forging techniques, each blade offers exceptional hardness and wear resistance, ensuring long-lasting durability and reliable performance. Whether you’re working on DIY projects, crafting, or light industrial tasks, this versatile set enhances productivity by reducing material waste and tool replacement costs. The included mandrels and clear storage box make organization simple and setup fast.

Key Features

• Multi-Purpose Cutting Performance: Engineered to cut efficiently through soft metals like aluminum, brass, and copper, as well as wood and plastic, making it suitable for diverse applications from hobbyist crafting to small-scale production work.
• Compatible with Popular Rotary Tools: These blades fit standard 1/8″ (3.2 mm) shanks and are compatible with most power die grinders, rotary tools, and air tools—especially those made by Dremel. They have been tested using original Dremel rotary tools to ensure optimal compatibility and performance.
• Heat-Treated High-Speed Steel Construction: Each cutting wheel undergoes a rigorous heat treatment process involving salt bath quenching at 1205–1215°C, followed by multiple tempering cycles. This results in a final tissue hardness of 64–66.5 HRC, providing superior strength and resistance to deformation under high-speed operation.
• Air Hammer Forging for Enhanced Durability: The manufacturing process includes repeated air hammer forging, which refines the grain structure and carbide distribution within the steel. This refinement improves both metal hardness and wear resistance, extending blade life and maintaining sharpness over time.
• Easy Installation & Secure Use: The set includes two mandrels—one 1/8 inch (3.2 mm) and one 1/4 inch (6 mm)—allowing flexible mounting options. When installing, ensure the entire mandrel shank is fully inserted and secured tightly with the top screw to prevent bending or misalignment during use.
• Organized Storage Included: Comes with a clear plastic box featuring a hinged lid, keeping all six HSS circular saw blades neatly stored, protected, and easy to access for quick swaps between projects.

Technical Specifications

• Number of Blades: 6
• Material: High-Speed Steel (HSS)
• Mandrel Shank Sizes: 1/8 inch (3.2 mm) and 1/4 inch (6 mm)
• Inner Diameter of Blades: 6.35 mm
• Blade Thickness: 0.8 mm
• Outer Diameters Available: 22 mm, 25 mm, 32 mm, 35 mm, 44 mm, 50 mm
• Total Weight: 80 g
• Hardness After Treatment: 64–66.5 HRC
• Maximum Safe Operating Speed: Not exceeding 20,000 rpm
• Storage Case: Clear plastic box with hinged lid

Benefits & Use Cases

This accessory kit is particularly beneficial for hobbyists, DIY enthusiasts, and professionals who regularly use rotary tools for detailed fabrication or finishing tasks. Its ability to cut soft metals without clogging or chipping makes it ideal for jewelry makers, model builders, and woodworkers modifying intricate designs. The variety of blade sizes allows users to select the right diameter for specific jobs—from fine detail grooving to faster bulk material removal. Because the blades are constructed to withstand high rotational speeds while maintaining structural integrity, they reduce downtime caused by premature wear or breakage. Additionally, their compatibility with widely used brands like Dremel ensures broad usability across existing tool collections.

Important Notes

• Always insert the full length of the mandrel into the collet and tighten the securing screw before operating to avoid shaft bending or off-center cutting.
• Never exceed 20,000 revolutions per minute (rpm) to maintain safety and prolong blade life.
• Use smaller diameter blades whenever possible under normal operating conditions to reduce stress on the motor and extend equipment longevity.
• Be aware that the rotary tool operates at very high speeds; always wear protective gloves and eyewear when handling moving parts.
• Ensure correct direction of rotation when installing—cutting should occur only in the intended operational orientation.
• The package includes 6 HSS circular saw blades, 2 mandrels, and 1 clear storage case.