🔩 90° Countersink Carbide Burrs – Precision Chamfering for Metal & Wood

Right Lines 90-Degree Countersink Carbide Burrs are designed to deliver smooth, accurate chamfering and countersinking for a variety of materials including mild steel, stainless steel, cast iron, hardwood, and more.

Ideal for preparing holes for flat-head screws, deburring, or creating clean angled finishes on edges and holes, these burrs are an essential tool in fabrication, joinery, metalworking, and engineering workshops.

Available in multiple diameters with 6mm or 8mm spindles, they are compatible with most die grinders, rotary tools, drill chucks, and lathes.

✅ Key Features:

• 90° countersink angle – perfect for prepping screw holes in wood or metal

• Tungsten carbide tip – durable, long-lasting, and heat-resistant

• Double fluted design – clean, chatter-free cutting on hard metals

• Multi-material use – effective on ferrous metals, hardwood, plastic, and composites

• 6mm or 8mm shank options – fits die grinders, drills, lathes, and rotary tools

📐 Specifications:

• Material: Premium tungsten carbide

• Cut Type: Double fluted (ideal for ferrous and hardwoods)

• Angle: 90° standard countersink

• Shank Options:

  • 6mm spindle – standard for die grinders

  • 8mm spindle – better suited for drill chucks and lathes

• Compatible Materials: Mild steel, stainless, cast iron, wood, plastic

• Size Format: Burr Diameter × Burr Length × (Spindle Diameter × Length)

🛠️ Common Applications:

• Countersinking screw holes in steel, stainless & hardwood

• Deburring drilled holes in metal parts

• Chamfering pipe openings or edges

• Prepping flat-head screw seats in woodwork

• General edge finishing and fabrication

🔧 Tool Compatibility:

• Die grinders with 6mm or 8mm collets

• Power drills and cordless drivers

• CNC or manual lathes

• Rotary tools with chuck adaptors

🧰 Related Products:

• Flat-End Cylinder Burrs – for bore reaming

• Pointed Cone Burrs – for countersinking at custom angles

• Wood-Carving Burr Sets – for craft and joinery projects

• Unitised Discs – for finishing after burr use

💡 Pro Tip:

Use at medium speed with light to moderate pressure to achieve a smooth chamfer without burning or gouging. For hardwood, reduce speed and let the burr do the work.

🏁 Summary:

Whether you're working in metal fabrication, cabinetry, or maintenance repair, these 90° Countersink Carbide Burrs provide fast, clean countersinks for flush-mount screws or aesthetic bevels. Durable, versatile, and workshop-ready.