NBB vacuum brazed diamond hole saw with M14, Classic Golden type, diamond drill bit for dry or wet drilling professionally on hard porcelain, ceramic, tile, granite, marble,for angle grinder(1, 55mm)

• 1pc of Dia.55mm NBB VB diamond drill bit in Professional Quality with M14 connection, easily connected to Angle Grinder. Standard connection in Europe and UK.
• Easy operation, applied for DRY or WET drilling, you can work in any conditions. The perfect tools are at your fingertips. You can also do the same great work as a master!
• Reasonable size designed after thousands of test experience. For dia.5-16mm, approx. 62mm total length with 35mm drilling depth. For dia.18-150mm, approx. 65mm total length with 40mm drilling depth. It meets the vast majority of work needs.
• Excellent operating experience, low vibration, low noise. USE IT ONCE, LOVE IT FOR LIFE. Extremely high work efficiency, a new generation of diamond technology allows it to drill a hole in TENS OF SECONDS on HARD PORCELAIN, CERAMIC, TILES, GRANITE, MARBLE...
• Durable and stable drilling life, one NBB VB drill bit for dry drilling dozens holes on HARD PORCELAIN, much longer working life than the electroplated one (almost 8times).. SAVING your money. You can drill much more holes in wet condition.

NBB Diamond drill bits (VB) are professionally manufactured for dry or wet drilling on all types of ceramics, especially porcelain, tile, granite, marble, sandstone and other hard materials. Diamond drill bits can both dry or water drill on hard porcelain and stones with higher efficiency and longer service life. With the M14 threaded connection, it can be used directly on the angle grinder. The recommended speed for use will be 11,000-14,000 rpm. The average service life of Dia.6-14 mm corresponds to about 30 holes. Average service life Dia.20-150mm is equivalent to about 50-70 holes. The average life of the drill bits ALWAYS depends on the type of material, its thickness and the proper cooling and use. It can be used to drill holes needed for water inlets, drains, light spots, etc. The drills(dia.6-14mm) has special cold wax inside to ensure proper dry drilling and stable performance. The drill bits (dia.20-150mm) have a side opening that improves the cooling of the drill bit and facilitates the removal of solid waste after each drill. To extend the life of the drill bits, please follow the correct instructions for using the method. 1. Please do not use the hammer mode of the machine. 2. Before performing a new perforation, we must make sure that the drill bit is properly installed on the machine, firmly without any vibration. 3. The drill must be clean and free from any obstructions. 4. When you are drilling, only low pressure is needed (in the horizontal direction. The pressure of the machine weight will be sufficient in the vertical direction.) All data are measured manually, so there will be some deviation.