3-piece Morse taper adapter set for MT1 to MT2, MT2 to MT3, and MT3 to MT4. Designed for lathe and milling machines to expand tool compatibility with different shank sizes in workshop environments. Made from durable alloy steel, each adapter features precision-machined tapers for secure tool mounting, minimizing wobble and maintaining accuracy during high-speed drilling and milling operations. Easy to use: insert the smaller taper tool shank into the adapter and attach the larger taper end to the machine spindle for quick tool changes, reducing setup time for professional and hobbyist machining setups. The set covers essential taper transitions for metalworking, woodworking and general machining tasks, enabling a single machine to work with drills, cutters and accessories across MT1 to MT4 standards. Use scenarios: - Quickly swap MT shanks on a milling machine to run drills and cutters with different MT sizes without changing machines. - Convert a lathe or milling spindle to accept tooling from MT1 up to MT4, reducing the need for multiple spindles. - Efficiently transition between small and larger MT tooling in metalworking and general machining tasks, improving workflow and tool utilization.