General description Mini Drill Chuck is a high-precision accessory designed to securely hold drill bits, preventing loosening during high-speed rotation. Its one-piece design, made of durable alloy, ensures reliability and smooth operation, enhancing work efficiency. Technical specifications Compatible with multi-function rotary tools models: 4000, 400, 3000, 398, 395, 300, 285, 275, 200, 100, 8200, 800, 780, 770, 7700, and 750 Not compatible with SDS and 8050 chucks due to spindle length issues Compatibility and accessories Includes 2 drill chucks Installation Keyless design allows for easy and quick bit changes without special tools Usage Designed for use with cordless screwdrivers, enhancing convenience and reducing interruptions