1.Masonry drills ,Parabola Flute; High-helix-Chrome; High-helix-Nickel; High-helix-Zinc; Tin-coated
2.Black Oxide,polished masonry drill available.
3.Milled or rolled forged masonry drills available.
4.Dia.: 3-26mm (1/8" -1");Length: 200, 300, 400 mm / 8", 12", 16" available