NBB Diamond Chamfering Drill Bit with M14 Diamond Milling Cutter Diamond Crown Diamond Hole Saw for Drilling Enlarging and Shaping Porcelain Ceramic Tile Granite Marble Dry/Wet 2 in 1 (1, 20mm)

• 1pc of dia.20mm (with 30mm length of diamond coating for milling) NBB VB diamond drill bit (bit for drilling and milling, 2 in 1) in professional quality with M14 connection, easy to connect to angle grinder (connection standard in Europe and the United Kingdom). It is manufactured from high-quality raw materials in a new generation of diamond technology and high-end production processes.
• Easy operation, applied for DRY and WET drilling. It is also a multifunction tool. It is mainly used to shape holes in the edge of tiles or enlarge existing holes, but also used to trim or chamfer existing holes in porcelain, ceramic, tile, granite, marble, artificial stone and other hard materials.
• You can drill or router or shape new holes in the tiles, which helps create an ideal hole based on your design and reduces the risk of breaking the tiles. It is used to mill or shape holes in dry or wet conditions and clean them. It can go a long way to reducing the risk of cracks if you want to make a hole in the edge of the tiles.
• You can directly mill the hole and save time to change a tool after drilling. It is a good product to easily create the round side holes needed to accommodate pipes or electrical cables. Additionally, it can be used to outline the round shape.
• It can help save a lot of money. It can be used for drilling and milling. As a milling bit, it is suitable for milling holes in a wide variety of diameters, which means it can be used to mill holes of different diameters (in the related diameter range). No need to buy multiple drill bits for different holes.

NBB (VB) vacuum brazed diamond drill bits diamond milling bits (diamond finger bits) are professionally produced for dry or wet drilling, enlarging or shaping holes in all types of ceramic, porcelain, tile, granite, marble, stoneware and other hard materials. With VB technology, the diamond drill bits can dry or wet drill on hard porcelain and stones with higher efficiency and longer life. NBB diamond drill bits with M14 thread connection can be used directly on a Grinder. The recommended RPM for use will be 11,000 to 14,000RPM. The average life of the drill bits depends, ALWAYS , the type of material, its thickness and correct cooling and use. The drilling depth can be approx. 35 mm. NBB VB diamond drill bits can be used to drill the necessary holes for water inlets, drains, light points, etc. But it is recommended to use them after drilling a hole, especially if you need to enlarge or shape a hole. They can be used to enlarge the hole, or to make a hole in the edge of the ceramic. They can also chamfer the hole and leave it clean. With it you will find a clean, precise and beautiful finish on the edge of the holes. It is very useful to improve the aesthetic grade for finishing the edges of exposed holes. To make the drill bits last longer, please follow the correct instructions of the method of use. 1. Do not use the hammer mode of the machine. 2. Before drilling again, we must ensure that the drill bit is correctly installed in the machine, firmly without vibration. 3. The drill bit must be clean and free of any obstructions. 4. When they are drilling, only little pressure is needed (in horizontal direction. The pressure of machine weight will be enough in vertical direction).