Concrete drill bits are also called Masonry drill bit、Hammer drill bit、Carbide-tipped drill bit、SDS drill bit、Rotary hammer drill bit、Percussion drill bit. Today we will learn about concrete drill bit sizes.

Diameter concrete drill bit sizes

The diameter of a concrete drill bit sizes is its most basic specification. The size of the diameter determines the diameter of the drilled hole, generally measured in millimeters. The diameter of concrete drill bits generally ranges from 6 mm to 100 mm. Common diameter specifications are 8mm, 10mm, 12mm, 14mm, 16mm, 17mm, 18mm, 20mm, 22mm, 25mm, 28mm, 30mm, 32mm, 35mm, 38mm, 40mm, 45mm, 50mm, etc. The diameter of the concrete drill bit determines how large a hole you can drill. The larger the diameter, the larger the hole you can drill, and the corresponding speed of the power tool will be lower. The smaller the diameter of the concrete drill bit, the smaller the hole that can be drilled, and the higher the speed of the power tool.

Length specifications of concrete drill bit sizes

The length specifications of concrete drill bits usually include 280mm, 320mm, 340mm, 370, 400, 450, 500mm, 600mm, 800mm, 1000mm, etc. The selection of length should be determined according to the depth of drilling required.

concrete drill bit sizes
concrete drill bit sizes

Connector type

The joints of concrete drill bits generally include triangular wedge joints (TTG), tapered joints and square joints (SDS), and hexagonal joints (Hex). Among them, SDS connector is the most common one, which has the characteristics of quick connection and disassembly, and is easy to replace.

Selection method

When choosing a concrete drill bit, it should be decided based on the specific working conditions. The first factors to consider are the hardness and density of the concrete that needs to be drilled, followed by the size and depth of the drill hole, and finally the length of time the drilling operation will take. Specifications such as diameter, length and joint type are selected based on these factors to ensure work efficiency and safety.


Specifications of concrete drill bits include diameter, length, joint type, etc. Choosing the appropriate specifications according to specific working conditions can improve work efficiency and safety. When selecting the size of a concrete drill bit, factors such as the hardness and density of the concrete to be drilled, the size and depth of the drill hole, and the length of the drilling job should be considered.

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