Diamond Crown Distar RS-TX 1 1/4 62mm x 450mm Dry Diamond Core Drill Bit

For professionals who refuse to compromise on speed or lifespan when drilling through abrasive masonry, the Distar RS-TX diamond core bit delivers a step-change in dry cutting performance. Its open-back design and laser-welded segments are engineered to chew through brick, sand-lime block, and aerated concrete without water cooling, while the 1 1/4" UNC thread locks directly onto standard core drilling rigs and handheld machines. The 62 mm diameter and 450 mm working length give you the reach and capacity to handle deep holes in walls, floors, and ceilings with minimal downtime.

Highlights

• Dry drilling optimized for abrasive building materials
• Laser-welded diamond segments with 10 mm height for extended life
• Open-end design allows fast core removal and continuous drilling
• 1 1/4" UNC connection fits most professional core drilling rigs
• Five segments ensure balanced cutting and reduced vibration

In daily use

On site, the RS-TX proves its worth from the first hole. The segment geometry is tuned for high-speed penetration in sand-lime brick and aerated concrete, where ordinary bits glaze or wear prematurely. Because no water is required, you avoid slurry cleanup and can work in finished interiors without additional protection. The open back lets you knock out the core with a simple tap, keeping your workflow moving. Pair it with a suitable core drill and you have a reliable solution for HVAC, electrical, and plumbing installations.

Full specifications

• Drill bit type: Diamond core drill bit
• Drilling method: Dry
• Diameter: 62 mm
• Working length: 450 mm
• Connection thread: 1 1/4" UNC
• Application materials: Brick, sand-lime brick, aerated concrete, abrasive building materials
• Segment type: Laser welded diamond segments
• Segment height: 10 mm
• Number of segments: 5
• Recommended machine type: Core drilling rigs, handheld core drills
• Optimal performance: High speed drilling in abrasive materials
• Series: RS-TX
• Material compatibility: Masonry, light non-reinforced concrete
• Cooling requirement: None (air cooled)
• Product type: Diamond core drill bit
• Tool compatibility: Core drilling machines with 1 1/4" UNC spindle
• Durability feature: Optimized for long life in abrasive applications
• Core removal: Open-end design for easy core removal
• Intended use: Professional construction and renovation

Final note

Engineered for the toughest dry drilling tasks, the Distar RS-TX combines precision, durability, and ease of use to keep your projects on schedule.