AWTOOLS Diamond Core Drill Bit 162 mm x 430 mm, 1 1/4 inch UNC Thread, Laser Welded Segments for Concrete, Reinforced Concrete, Brick, Masonry, Stone, Asphalt

On a busy construction site, a professional core driller needs to create clean, precise holes in reinforced concrete for plumbing and electrical conduits. The AWTOOLS Diamond Core Drill Bit 162 mm x 430 mm with 1 1/4" UNC thread delivers reliable performance for wet drilling in the toughest materials. Its laser-welded diamond segments ensure durability and fast cutting, making it a trusted tool for contractors and serious DIYers.

Key specifications

• Cutting diameter: 162 mm
• Working length: 430 mm
• Connection thread: 1 1/4" UNC (external thread)
• Segment material: industrial diamond, laser welded
• Segment height: 10 mm, segment width: 4 mm, number of segments: 12
• Suitable materials: concrete, reinforced concrete, brick, masonry, stone, asphalt
• Drilling method: wet drilling (water cooling required)
• Core bit type: diamond core drill bit
• Shaft material: high-strength steel
• Recommended machine type: core drilling rigs / core drills

Why choose it

This core bit is engineered for professional core drilling, offering a high diamond concentration and robust laser-welded segments that withstand heavy use. The 1 1/4" UNC thread ensures a secure fit on standard core drilling machines, while the 430 mm working length allows deep drilling in a single pass. Wet drilling keeps the bit cool and reduces dust, extending tool life and improving hole quality.

Ideal use cases

• Creating openings for pipes, cables, and ventilation ducts in concrete walls and floors
• Drilling anchor holes and through-holes in reinforced concrete structures
• Core sampling in masonry and stone for construction testing
• Installing dowels and rebar connections in asphalt and brick

Good to know

Always use water cooling during operation to prevent overheating and ensure optimal cutting performance. Check that your core drill machine has a compatible 1 1/4" UNC spindle. For best results, start drilling at a low speed and gradually increase. The bit is designed for professional use and should be handled with appropriate safety equipment.