Set of 6 square hole drill bits - Hollow steel - Diameters 6-16mm - For mortising and woodworking

1. [Superior Quality] This square drill bit is made of high-speed steel, making it durable, practical, and high-performing. Its cutting edge is heat-treated for optimal hardness, and its continuous blade allows for fast cutting. 2. [High-Quality Design] The drill guide design effectively prevents tear-out at the start of drilling, ensuring clean and accurate holes. 3. [Labor-Saving and Precise] Reduces the physical labor of construction workers, speeds up the work process, and lowers construction costs in building, installation, renovation, and decoration projects. 4. [Wide Range of Uses] Ideal for drilling square holes in wood using a mortiser or mortising attachment. Square drill bits are primarily designed for woodworking applications. 5. [Wide Application] This square hole drill bit is suitable for various materials, including MDF, plastic, particle board, canal wood, pine, basswood, and other types of wood.