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
Diameter | Flute length | Total length | |
3.0mm | 1/8inch | 30 | 60 |
3.5 | 9/64 | 30 | 60 |
4.0 | 5/32 | 45 | 75 |
4.5 | 11/64 | 50 | 85 |
5.0 | 3/16 | 50 | 85 |
5.5 | 7/32 | 50 | 85 |
6.0 | 15/64 | 55 | 100 |
6.5 | 1/4 | 60 | 100 |
7.0 | 9/32 | 60 | 100 |
8.0 | 5/16 | 70 | 120 |
8.5 | 21/64 | 70 | 120 |
9.0 | 11/32 | 70 | 120 |
9.5 | 3/8 | 70 | 120 |
10.0 | 3/8 | 90 | 120 |
11.0 | 7/16 | 90 | 150 |
12.0 | 15/32 | 90 | 150 |
13.0 | 1/2 | 90 | 150 |
14.0 | 9/16 | 90 | 150 |
15.0 | 19/32 | 90 | 150 |
16.0 | 5/8 | 90 | 150 |
18.0 | 23/32 | 105 | 160 |
20.0 | 3/4 | 100 | 160 |
22.0 | 7/8 | 100 | 160 |
24.0 | 15/16 | 100 | 160 |
25.0 | 1 | 100 | 160 |