🧱 Extended Dry Diamond Core Drill Bits – For Deep Wall & Double Skin Drilling

Right Lines extended dry core drill bits are specifically designed for deep wall drilling, allowing professionals to drill through double-skin walls, cavity walls, or thick masonry in a single pass. With longer barrels and premium laser-welded diamond segments, these core bits are the perfect solution for electricians, plumbers, and builders who need fast, clean access for conduits, pipes, or services.

These bits are especially effective in older buildings where internal wall cavities may contain loose-fill insulation. By feeding the pipe through as the core is withdrawn, users can avoid disruption or collapse of loose fill—making installation cleaner and more efficient.

✅ Key Benefits:

• Extended barrel length for drilling through deep or double walls

• Ideal for one-pass drilling in stone, brick, and concrete

• Designed for plumbing and electrical conduit installation

• Helps prevent fallback of loose-fill insulation in older walls

• Compatible with standard ½" BSP male dry core adaptors

• No pilot drill required – simple, efficient operation

• For use with non-hammer drills with clutch or torque limiter

🛠️ Suitable Applications:

• Drilling deep wall penetrations for conduit or pipework

• Core drilling stone, masonry, brickwork, and concrete

• Retrofits in heritage and older buildings with cavity walls

• Creating clean access holes without internal wall damage

📐 Product Specifications:

• Fitting: ½" BSP standard dry core bit fitting

• Segment Type:

  • Turbo-style or slotted segments for faster cutting

  • Laser-welded diamond segments for strength and durability

• External Spiral Dust Channel: Helps eject dust away from the cut

• Tool Requirements:

  • Power drill with at least 1000W output

  • Must have clutch or torque limiter

  • Do not use hammer action

• Pilot Drill: Not required with this extended design

🧰 Recommended For:

• Electricians drilling access for conduit and trunking

• Plumbers installing pipes through deep external walls

• Builders and contractors working in renovation or refurbishment projects

• Retrofits in properties with stone or brick outer layers and cavity insulation

🔧 Pro Tips:

• Align core bit carefully before drilling

• Feed the pipe or conduit through while withdrawing the core to prevent fallback

• Use low to medium speed on your drill for best performance and tool life

• Always wear proper PPE when dry drilling into masonry materials

Drill deeper, faster, and cleaner through brick, stone, and cavity walls with Right Lines extended dry diamond core drill bits—perfect for professional-grade conduit and plumbing installations.

Also Available: We stock a range of accessories for dry core bits.