Features High Speed Steel Blade: Crafted from high speed steel, this drill bit features an incisive and wear-resistant blade with high hardness and long service life. U-Shaped Design: The U-shaped drill sleeve design allows for convenient drilling and efficient wood chip discharge, enhancing overall drilling efficiency. Precision and Speed: Achieve faster and more accurate square holes compared to manual methods when using this drill bit on a camphor machine, delivering professional results for construction, installation, and decoration projects. Versatile Application: Suitable for various industries, this professional square drill bit set meets diverse needs in construction, installation, and decoration, accelerating construction speed and reducing costs. Durable Performance: Designed to accelerate construction speed and reduce costs, this square hole drill bit offers durable, reliable performance for woodworking projects. 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: 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. Note: In normal use, don't try to mold at one time, but need to press and lift multiple times. This will not only help the drill bit to discharge sawdust, drill a suitable square hole, but also protect the drill bit. Package List 1 x Square Hole Drill Bit 1 x Plastic Box