Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Quality Material: These square hole drill bits and wood mortising chisel set are crafted with high-speed steel, ensuring durability and . The HRC48-50 hardness guarantees their ability to withstand heavy-duty woodworking tasks. Versatile Woodworking Application: Designed specifically for woodworking, these square hole drill bits and chisels are perfect for creating precise square holes in wooden materials. Whether you're working on furniture, cabinets, or other woodworking projects, these tools provide the accuracy and efficiency needed to achieve clean and professional results. Enhanced Precision and Finishing: When using these drill bits, you can achieve tidy square holes. However, for the finer details, it is recommended to chisel by hand. This additional step ensures that the square holes have a polished and refined finish, enhancing the overall quality of