Spring Collet,Spring Collet Set, 3 Piece ER11 CNC Collet Set,Milling and Lathe Chuck Tool Kit Includes 1/8 Inch, 4mm,

[Premium 65Mn Spring Steel for Stability and Durability]:These ER11 collets are constructed from 65Mn spring steel which provides excellent stability during high speed machining operations. The steel has optimal elasticity and fatigue strength for long lasting precision performance [Fine Manufacturing for 0.08mm Runout Tolerance]:Precision CNC manufacturing and hand finishing result in an ultra tight runout tolerance of just 0.08mm. This enables highly accurate clamping with minimal vibration or slippage during machining, even under aggressive loads [Must Use Collet Nut for Secure Workholding]:The ER11 collet design requires being inserted into the corresponding collet nut, which threads into the spindle, in order to tightly clamp workpieces. This provides strong, highly concentric clamping pressure [Clear Size Markings for Quick Identification]:Each collet is stamped with clear size markings, such as 6mm or 8mm, for quick and easy identification. This allows quickly grabbing the right size collet for the job. No guessing or trial and error The product is made spring steel, internally and externally finely ground, with high precision,high elasticity,stable cutting,This collet has a wide range of applications and meets ,can be directly replaced to meet your various needs. Suitable for CNC milling tools, high speed engraving machines and other treatments.