HIGHDRIL Diamond Hole Saw Kit 20/25/35/50/68mm Drill Bits+20mm Finger Bits+Adapter,7Pcs Core Bit Set for Porcelain Ceramic Tile Granite Marble

【Specification】5pcs M14 thread diamond drill bits: 20/25/35/50/68mm,1pc 20mm finger bit and 1pc M14 to HEX adapter 【Application】Diamond core drill bits for dry or wet drilling Porcelain tile, Ceramic, Granite, Marble, Stone, Masonry, Brick and all similar material. For use with electric drills, an SDS or HEX shank adaptor needs to be fitted. Recommended speed 6000RPM, maximum speed 11000RPM. 【Vacuum Brazed】Vacuum brazed drill bit for fast cutting and drilling, with long service life, high efficiency and durability. 【Set Combination】The combination of drill bits, milling bit and adapor makes the work more efficient and allows drilling, milling and reaming of multiple sizes with one set of tools. With the adapter, it is also possible to adapt the M14 drill bit to the electric drill 【Aluminium Suitacase】Aluminium portable suitcase included for easy carry and storage and protect of the diamond core drill bits.