Fast changeover for mixedvariety, lowvolume machining: fixture changeover time is only 1520 seconds, reducing downtime and boosting productivity. precision 68 division design: collet shanks are built with 6 to 8 divisions; more slots enable tighter, more uniform tightening and higher precision as slots increase. Durable 65Mn steel construction: strength and toughness to maintain reliable performance under complex working conditions. Wide compatibility and practical applicability: Spring collets ER16 and nut set are suitable for a range of equipment, including CNC machines, milling machines, engraving machines, and machining centers. Use scenarios: A job performing shortrun, mixedtool setups on a CNC milling center, needing fast tool changes. Engraving and precision milling tasks requiring repeatable clamping accuracy across varied tool diameters. Smallbatch production on machining centers with frequent collet changes, where quick, reliable clamping improves throughput.