1. PRECISION GRINDED FOR SMOOTH OPERATION: Our spindle morse cone adapter sleeve MT4 to MT1 is finely ground on both inner and outer surfaces to ensure seamless connections and reduced vibration during use. This meticulous craftsmanship enhances precision in drilling and milling, making it ideal for precision projects. 2. EFFICIENCY BOOSTER FOR WORKING TASKS: Featuring a drill chuck with a conical shank, this adapter sleeve effectively converts the conicity of the connecting shaft, significantly improving work efficiency. Suitable for various drilling and lathe applications, it helps streamline production processes and minimize downtime. 3. SURFACE FINISHING: Designed for demanding drilling and turning operations, our adapter boasts a quality surface finish, delivering smoother cuts and extended tool life. for professionals seeking flawless results, it elevates the quality of your machined parts. 4. TORSION CAPABILITY FOR HEAVYDUTY WORKS: The MT4MT1 reducing sleeve supports torsion applications, making it an choice for large cutting diameters and heavyduty tasks. Its durable construction ensures stability and reliability even under extreme conditions, pushing the limits of your machinery.