Features 1、Square hole drill is made of high speed steel. The blade is incisive and wear‑resistant. The whole heat treatment has high hardness and long service life. 2、U‑shaped design of the drill sleeve is convenient for drilling and discharging wood chips to improve the drilling efficiency. 3、Using a square hole drill, mounted on a camphor machine, makes the square hole faster and more accurate than using chisels or other manual methods. 4、Professional drill, suitable for construction, installation, decoration, decoration and other industries, square drill set to meet most needs. 5、Accelerate the construction speed, reduce the construction cost of construction, installation, decoration, decoration and other industries. Specification Item Type: Square Hole Drill Bit Material: High Speed Steel Uses: Professional Square Drill Bits, Suitable for Drilling and Mortising Grooves in Low-Hardness Materials Such as Density Boards, Pressboards, Plastics, Hardwoods, Etc. in the Process of Construction, Installation and Decoration. Package List 1 x Square Hole Drill Bit 1 x Plastic Box