Features High Quality Material: Made of 65Mn spring steel, our ER11 spring collet set includes 15 collets ranging from 1mm to 7mm, as well as 1/8" and 1/4" sizes. The collets have a height of 18mm and an outer diameter of 10mm,ensuring stability, fine workmanship, good elasticity, and high precision, allowing for long-term use. Perfect Replacement: Designed to have the same shape, fit, and function as the original part, this collet chuck offers high precision and sensitivity, making it an ideal replacement for broken or worn-out parts. Easy to Use: Each clip in the collet set is clearly marked, making it easy for you to distinguish and insert them into the chuck nut before placing them in the chuck. Wide Application: Our spring collet set is versatile and can be directly replaced to meet various needs. It is suitable for CNC milling lathe tools and work-holding engraving machines, making it widely used in sculpture, CNC, and other processing tasks. Quality Assurance: We provide 24-hour after-sales service. If you have any questions or concerns about the spring collet set, please feel free to contact us. We are committed to solving any problems you may encounter. Description:These spring collets are made of high quality 65Mn spring steel for CNC milling lathe tool and work-holding engraving machine. There are total 15 collets of various sizes in on set which can basic meet your need. Each collet is well packed in separate protective container with label so you can easily distinguish them. Collet must be placed into collet chuck nut before inserting into collet chuck. Features:Made of high quality spring steel, they are stable in performance.Fine workmanship, good elasticity, high precision. Collet must be placed into collet chuck nut before inserting into collet chuck.Each collet is well packed in separate protective container with label.For CNC milling lathe tool and work-holding engraving machine. Specifications:Material: 65Mn spring steelModel: ER11Range: 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 1/8" ,1/4" Height: 18mm / 0.7" OD: 10mm / 0.39"Run-Out Tolerance: <0.015mmWeight: 127g(approx.) Package Includes:1 Set(15pcs) x Collets Note: 1. Please allow 1-2mm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package List