Concrete Super drill bit set (7-piece), round shank, with plastic cassette (Ø 4 / 5 / 5.5 / 6 / 7 / 8 / 10 mm)
These high quality concrete drill bits have a unique shaped drill head with centering point and a H-spiral flute for maximum drilling speedand longer life time in hard materials such as concrete, aerated concrete blocks, masonry, natural stone, artificial stone, ceramic tile,slate and granite.
