A reversible tapping attachment on a drilling and milling machine is used to perform tapping operations—where a hole is threaded—on a workpiece. This attachment is designed to thread holes in both directions: forward for cutting threads and reverse for backing out the tap, preventing the tap from breaking due to excessive torque when it binds.The system is relatively simple to operate, and adjustments can usually be made for different tap sizes and thread pitches.Tapping attachments are ideal for use in high-volume production environments where threading is a routine operation. They are used in industries like automotive, aerospace, and general manufacturing for creating threaded holes in metals, plastics, and other materials. In summary, the reversible tapping attachment on a milling machine allows for efficient, reliable, and safe threading of holes, with the ability to automatically reverse the tap to prevent breakage and improve productivity.