Square Drill Bit Set for Woodworking, Wear-Resistant HSS 1/4in 5/16in 3/8in 1/2in Milling Bit, Ideal Mortising Machine Attachment, Double Acting for the

[High-Speed ​​Steel] Made from heat-treated high-speed steel, these drill bits offer exceptional hardness and durability, perfect for continuous use in woodworking projects. [Ideal for Mortising] Perfect for woodworking, these square hole drill bits work seamlessly with mortisers or accessories, ensuring precise, professional results. [Improved Drilling Efficiency] Combine these drill bits with a mortiser for double the efficiency, making it easier to drill square holes with a variety of tools. [Various Square Hole Sizes] Users can create precise square holes by using different sized drill bits with compatible machines, ensuring efficient compliance with requirements. [Reduced Construction Labor Costs] These high-speed steel wood drill bits reduce labor, speed up construction, and lower the costs of building and renovation projects. Specifications: Item Type: Woodworking Square Drill Bit Set Material: HSS Drill Bit Sizes: 6.4 mm (1/4 in) 8.0 mm (5/16 in) 9.5 mm (3/8 in) 12.7 mm (1/2 in) Package List: 4 Woodworking Square Drill Bits, 4 Storage Boxes