NBB Brazed Diamond drill Bits with hex shank, for Dry drilling on hard Porcelain, Ceramic, Tile, Granite, Marble, extra longer life in wet drilling, used cord or cordless pistol (6mm x2pcs)

2pcs of dia.6mm NBB VB diamond drill bit in Professional Quality with HEX shank, easily attaches to universal pistol drills (Both corded and cordless pistol drills are accepted). Never needs to choose a machine for a drill bit. Appropriate size designed after thousands of testing experience. For dia.5-6mm, total length is approx. 68mm with approx. 32mm drilling depth. For dia.8-16mm, total length is approx. 80mm with approx. 40mm drilling depth. It meets the vast majority of work requirements. Easy operation, applied for DRY or WET drilling. It can work in all conditions. The perfect tools are at your fingertips. You can also do the same great work as a master! Multiple applications: drilling on HARD PORCELAIN, CERAMIC, TILES, GRANITE, MARBLE... A new generation of diamond technology enables high work efficiency and time savings. Durable and stable serving life, one NBB VB diamond drill bit allows for a much longer working life than the nickel plated one (almost 10 times). SAVE your money and ALLOWS you to create more. (You can drill much more holes in wet condition).