CONQUER Tools 5-Flute Countersink Drill Bit, 87° | 1/4'' Hex Shank | 3–19 mm

Refine hole ends with confidence using the CONQUER Tools 5-Flute Metal Countersink Drill Bit. Forged from durable alloy steel, this countersink trims away damaged metal and burrs while shaping a clean, beveled edge. The 87° angle supports a crisp chamfer, helping parts fit together with smoother transitions. Whether you’re finishing machined holes or prepping pipe ends, this tool is designed to deliver consistent results across a range of materials.

Designed for speed and versatility

The 1/4" quick-change hex shank enables fast, tool-free swaps with most handheld and stationary drills. The 5-flute geometry is engineered for efficient cutting and steady deburring, covering hole sizes from 3 mm to 19 mm. This combination of geometry and material strength makes it suitable for repetitive use in workshops, fabrication shops, and hobby setups alike.

• Designed to clean ends quickly and safely
• Alloy steel construction for dependable deburring and chamfering
• Hole range: 3 mm to 19 mm
• 1/4" quick-change hex shank for quick tool changes
• Compatible with stainless steel, hardened steel, mild steel, copper, brass, plastic, and more

Practical uses and benefits

Use this countersink to prep holes for fasteners, remove burrs, and create uniform chamfers before assembly. The tool’s robust design supports repeated use in a variety of projects, from maintenance work to fabrication tasks, without relying on improvised solutions.

• 87-degree chamfer provides crisp edge definition
• Suitable for pipe ends, tubes, and drilled holes
• Reliable performance across multiple metals and plastics
• Ground flutes promote smooth, repeatable cuts

Note: Actual results depend on material and application setup. This countersink offers a versatile option for deburring, beveling, and hole-end shaping in many fabrication scenarios.