The 1661 HM-tipped TCT Cylinder Boring Bit (Long) is built for stationary drills, offering deep, precision boring in hardwoods, coated chipboards and technical plastics. Its extended flute evacuates chips cleanly, while quality tungsten-carbide inserts and CNC diamond grinding guarantee crisp, tear-free edges.

✨ Key Features

• HM-Tipped Geometry – Carbide centering tip, two main cutters & two pre-cutters for minimal wander

• Hex Shank (Ø 42–120 mm) – 10 mm hex for slip-free power transfer in larger sizes

• CNC Diamond Grind – Perfectly honed cutting edges for consistent hole quality

• Asymmetric Flute Grind – (from Ø 25 mm) Easier penetration in plastic-coated materials

• Low Heat Build-Up – Optimised rim teeth and flutes reduce friction and extend tool life

• Long Service Life – Premium HM inserts withstand heavy workloads without dulling

⚙️ Technical Specs

• Diameter Range: 60 – 120 mm
• Shank Diameter: 10 mm
• Total Length (GL): 150–160 mm
• Cutting Length (NL): 100–120 mm
• Material: Tungsten-carbide tips on alloyed steel core

🪵 Applications

• Clean, tear-free holes in hardwoods, coated/KS-coated boards

• Boring in acrylic, Plexiglas®, Corian®, GFRP, HPL, polycarbonate, PVC, Trespa®

• Deep-hole machining in stationary drilling rigs

📦 Package Contents

1 × HM-tipped TCT Cylinder Boring Bit (Long) in blister pack

💡 Why Choose This Bit?

Designed for professionals, the 1661 combines carbide-tipped precision, diamond-ground edges and extended flutes to deliver exceptional hole quality and durability—ideal for cabinetry, panel work and technical plastics.