With the Metabo Futuro Plus S1m 636621000 keyless chuck, you change drill bits and accessories in seconds without needing a separate chuck key. Its heavy-duty metal sleeve and impact-proof design easily handle demanding tasks on drills featuring a spindle stop and forward or reverse rotation. With a versatile clamping capacity from 1.5 to 13 mm, you securely grip a wide range of straight-shank drill bits. The 1/2"-20 unf female thread connection is drilled through for a locking screw to prevent loosening, giving you dependable control and efficiency on every drilling job.