Rotary Hammer Drill Bit Rock Drill Bit Set With Case For Concrete For Brick For Stone Feature:1. Drill Different Materials: The drill bit is very suitable for drilling concrete, masonry, stone, brick and other construction projects2. YG8C tipped carbide tip: adopt YG8C tung carbide tip, can ensure fast and simple drilling and long service life3. Effectively Remove Waste: The masonry drill bit is equipped with double pits, double grooves and round mandrels, it can effectively remove waste4. Round shanks: there are 10 drill diameters, including 4mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 8mm, 10mm, 12mm, 14mm, to meet your different needs5. With storage box: carbide tip drill bit set equipped with storage box, which is easy to store and convenient to carrySpecification:Item type: masonry drill bit setMaterial: yg8c+40crPurpose: electric hammer drill bit setDrill total length: approx. 160mm/6.3inDrill diameter: approx. 4mm/0.16in5mm/0.2in5.5mm/0.22in6mm/0.24in6.5mm/0.26in7mm/0.28in8mm/0.31in10mm/0.39in12mm/0.47in14mm/0.55inUsage scenarios: bricks, masonry, concrete, rocks, tiles, cement etc. Package List:10 x Rock Drill Bit1 x Storage Box 1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow. 2) Payment must be made within 3 days of placing the order. 3) If you can't check out immediately after the auction ends, please wait a few minutes and try again, payments should be completed within 3 days. About Shipping 1.