8Pcs High Speed Steel Cutting Disc Set – 20000RPM Rotary Tool Saw Blades for Metal, Plastic & Wood

This 8-piece set of high-speed steel (HSS) cutting discs is specifically designed for high-speed rotary tools (such as Dremel, Bosch, Milwaukee and other brands), supporting a maximum speed of 20,000 RPM, and can easily handle precision cutting of a wide range of materials including metal, plastic, wood and acrylic sheets.
The set includes 6 thin-blade cutting discs (0.8mm) for fast cutting and low wear

✅ Ready to use straight out of the box – all blades feature a standard 6.35mm (1/4") shank, compatible with the vast majority of power tools and mini angle grinders on the market.

✨ Key Selling Points
🔩 High-Speed Steel (HSS) – wear-resistant and heat-resistant, offering a longer service life than standard alloy blades

🎚️ Ultra-high speed of 20,000 RPM – Fast, burr-free cutting, ideal for precision work

🛡️ 1.2mm thickened and reinforced blade – Designed specifically for hard materials and heavy-duty cutting (1 included in the set)

⚙️ 0.8mm Thin Blade Series – 7 diameters, low wear and high efficiency, ideal for cutting in confined spaces

🔩 Nickel-plated handle – Rust-resistant and wear-resistant, remains secure even after prolonged use

📏 Dual imperial/metric sizing – Quickly identify diameters and bore sizes for easy selection

🧰 Compatible with multiple materials – soft metals (copper/aluminium), thin steel sheets, plastic tubing, PVC, wood, acrylic

📐 Technical Specifications
Item    Detailed Specifications
Total in Set    6 pieces
Material    High-Speed Steel (HSS) + nickel-plated centre shank
Maximum Speed    20,000 RPM (All blades)
Centre Bore    6.35mm / 0.25" (1/4 inch)
Blade Thickness    0.8mm (7 blades) / 1.2mm (1 heavy-duty blade)
Diameter & Quantity    See ‘Set Contents’ below
Compatible Tools    Rotary tools / angle grinders / mini angle grinders
Cutting Materials    Soft metals, thin sheet metal, plastic, wood, PVC, acrylic
📦 Set Contents (8-piece set – individually packaged)
No.    Diameter (Metric/Imperial)    Thickness    Shaft Diameter    Max. Speed    Quantity
50mm / 1.96"    0.8mm    6.35mm    20,000 RPM    1 piece
44mm / 1.73"    0.8mm    6.35mm    20,000 RPM    1 disc
35mm / 1.37"    0.8mm    6.35mm    20,000 RPM    1 disc
32mm / 1.26"    0.8mm    6.35mm    20,000 RPM    1 disc
25mm / 0.98"    0.8mm    6.35mm    20,000 RPM    1 piece
22mm / 0.86"    0.8mm    6.35mm    20,000 RPM    1 piece
💡 Why is there an extra 44mm thick version?
In everyday use, 44mm is the most frequently used ‘golden’ size. Thickened to 1.2mm, it offers greater strength when cutting hard metals (such as screws or 2mm iron sheets), making it less prone to shattering.

🛠️ Applications
✂️ Model making – cutting plastic sheets, copper rods, ABS parts

🔩 Repairs and disassembly – Cutting through rusted screws, thin metal sheets and cable ducts

🖼️ DIY crafts – Slotting aluminium sheets, making acrylic light boxes

🧵 PCB modification – Precision board separation, removing excess copper foil

Pipe cutting – Quick circular cuts on PVC pipes and flexible plastic tubing

🔧 Compatibility Information
Compatible with all rotary tools with a 6.35mm (1/4 inch) spindle diameter:
Dremel series (100/200/3000/4000/4200/4300/8220 etc.)
Bosch Growler / Bosch universal angle grinders
Milwaukee M12 rotary tools
Various cordless/corded angle grinders (please check that the chuck supports 1/4")
Not suitable for standard angle grinders (requires an adapter flange; direct use is not recommended)

⚠️ Safety Instructions
Do not exceed the specified speed of 20,000 RPM.
Always wear safety goggles and a dust mask.
When cutting, allow the tool to reach full speed naturally; avoid applying sudden lateral pressure.
Check the blade for cracks or deformation before each use.