Masonry Drill Bit
Professional rotary impact drills. Tungsten carbide tip with brass/zinc alloy braze. Hardened shanks, For drilling holes in concrete, rock, stone, masonry, marble, brick and granite, and so on. Our masonry drill bits can under different surface treatment, such as Ni-coated, Cr-coated, Zn-coated, Black-oxidized, Tin-coated and so on.
Our masonry drill bits have various types under different craftsmanship to meet different customers' quality requests, such as cold forged blank, milled bank, auto-brazed carbide tips, manual-brazed carbide tips and so on.
We also could do masonry drill bits with 1/4"hex grooved shanks and 7/16"hex grooved shanks to fit quick change connectors. Metric system is based on DIN8039 Standard.
We also can do that mulit-purposes drills upon the above sizes for drilling holes in the materials of masonry, tiles, wood, chipboard, metal board and plastic and so on, which are also carbide tipped with special featured outlines shapes.

Specification:
Diameter: 3-16mm
Packing: double blister, sliding card, wood box, or design by customer's requests.