Machinists and CNC operators, these ER40 spring collets are essential for precision workholding! The 1-inch clamping diameter is perfect for larger tooling and workpieces, giving you secure grip without marring surfaces. Made from 40Cr steel, these collets feel substantial and durable - they're built to withstand repeated use in production environments. The 0.015mm precision means you get minimal runout, which is crucial for accurate machining operations. I've used these on everything from CNC mills to engraving machines, and they provide consistent, reliable performance. The two-piece set is great value - keep one in use while having a backup ready. Remember to always place the collet into the collet chuck nut before inserting into the machine - that proper installation makes all the difference in performance and safety. The 46mm total height and 41mm outer diameter fit standard ER40 systems perfectly. Whether you're running production jobs or doing precision hobby work, having quality collets like these ensures your tools stay securely positioned throughout the machining process. They're one of those consumable tooling items where buying quality pays off in both accuracy and longevity. If you need reliable 1-inch collets for your machining center or milling setup, these ER40 spring collets deliver professional-grade performance at an affordable price!
Free 30-day returns 
Free 30-day returns
