RLECS Diamond Coated Drill 10PCS 5mm Diamond Coated Hole Saws Drill Bits for Glass Ceramic Tile Marble Rock Porcelain Bottles Pots Brick Silver Diamond Finger Milling Bit

Product NameDiamond coated hole saw drill bit can achieve high precision and smooth cutting no edge breakage with good toughness and high strength Product material highquality emery the surface treatment is nickelplated which can extend the service life and enhance the surface corrosion resistance These diamond drill bits are made of highspeed steel with a nickelplated coated body that is corrosionresistant and has a long service life Features Diamond coating increases drilling speed and sharpens drill bits Electroplated diamond is uniform and more wearresistant maximizing performance and maintaining sharper cutting edges than traditional carbide or bimetal hole saws In addition the special design with clearance holes facilitates the entry of cooling water and the escape of chips from the borehole making the drilling process easier Applications Diamondcoated hole saw drill bits are ideal for drilling glass ceramics porcelain tiles limestone slate marble light stone and fiberglass Low speed use is required Always use lubricant water when machining otherwise the hole saw will burn Not suitable for drilling of tempered glass plastic and wood Package contents 10PCS diamond coated hole saw drill bits with a drilling diameter of 5mm.