Features: High-Carbon Steel Construction: Crafted from durable high-carbon steel, our woodworking square hole drill bit ensures long-lasting performance and precision for your woodworking projects. Suitable for softwood and hardwood alike. Versatile Woodworking Applications: This wood mortising chisel countersink bit set is designed for a variety of woodworking tasks, including creating square holes for doors, windows, and cabinets. Ideal for both professional woodworkers and DIY enthusiasts. Precision-Cut Square Holes: Achieve clean and accurate square holes with ease using our woodworking square hole drill bit. The precision designs ensures smooth operation and professional results every time, making it a must-have tool for any woodworker. Durable and Reliable Performance: Made from good-quality materials, our wood mortising square hole drill bit delivers consistent and reliable performance. Suitable for both softwood and hardwood, this tool is built to last and withstand the demands of woodworking projects. Intimate Service: We attach great importance to product quality and provide customers with premium quality products and thoughtful after-sales service to meet the needs of each customer. Specifications: Material: Highly Carbon Steel Length: 21cm, 20.5cm, 16.5cm Note: Due to the screen lighting effect, the actual color of the product may be slightly different. Due to manual measurement, please allow size error. Include: Choice1: 1 Set Square Hole Drill Bit (4pcs) OR Choice2: 1*Square Hole Drill Bit