About this product

• NBB VB professional quality diamond drill bit with M14 connection, matrix structured diamond crown. It easily attaches to angle grinders. Standard fitting for Europe and the United Kingdom.
• Easy to operate, suitable for DRY AND WET drilling, works under all conditions. Perfect tools within your reach. You can achieve the same great results as a professional craftsman!
• Optimized dimensions developed after thousands of test trials. For sizes 6–16 mm: total length approx. 62 mm with 35 mm drilling depth. For sizes 18–150 mm: total length approx. 60 mm with 35 mm drilling depth. Meets the vast majority of job requirements.
• Excellent operating experience, low vibration and low noise. USE IT ONCE AND YOU WILL LOVE IT FOREVER. Ultra-high working efficiency; new-generation diamond technology enables drilling HARD PORCELAIN, CERAMIC, TILES, GRANITE, MARBLE… in TENS OF SECONDS.
• Long and stable drilling lifespan. One NBB VB dry-use drill bit can drill dozens of holes in HARD PORCELAIN, with service life far longer than galvanized bits. SAVE YOUR MONEY. You can drill many more holes when used wet.

Product Description

Product Description

NBB vacuum brazed (VB) diamond drill bits are professionally manufactured for dry or wet drilling on all types of ceramic, porcelain, tiles, granite, marble, gres and other hard materials. Featuring VB technology, these diamond bits can drill hard porcelain and stone either dry or wet with higher efficiency and longer service life. NBB diamond drill bits with M14 thread connection can be mounted directly on an angle grinder. Recommended operating RPM: 11,000 to 14,000 RPM.

The average service life of NBB VB diamond drill bits Dia.6–14mm is approximately 40 holes. The average service life of NBB VB diamond drill bits Dia.20–75mm is around 60–100 holes. The average lifespan of the drill bits ALWAYS depends on the type of material, its thickness, and proper cooling & operation. The drilling depth can reach approx. 35 mm. NBB VB diamond drill bits can be used to drill required holes for water inlets, drains, light fittings, etc. NBB VB diamond drill bits (dia.6–14mm) contain special cold wax inside to ensure proper dry drilling and stable performance. NBB VB diamond drill bits (dia.20–75mm) feature side openings to improve bit cooling and help remove solid debris after each drilling operation.

To extend the service life of the drill bits, please follow the correct operating instructions.1.Do not use the hammer mode of the machine.2.Before starting a new drilling operation, ensure the drill bit is properly mounted on the machine, securely fixed without vibration.3.The drill bit must be clean and free of any blockages.4.While drilling, apply only light pressure (horizontal direction. The weight of the machine itself provides sufficient pressure in the vertical direction).