
High Precision DIN6499b Er8 Er11 Er16 Er20 Er25 Er32 Er40 Collet Set for CNC Milling Machine Er Milling Collet Chuck Bt40 Er40 Set Collet Tool Holder Set. High Precision Accuracy: Available in 0.005mm, 0.008mm, and 0.015mm runout accuracy levels. Durable Material: Made of 65mn special elastic steel with HRC44-48 hardness. Wide Size Range: Includes ER8, ER11, ER16, ER20, ER25, ER32, ER40, and ER50 sizes. Versatile Applications: Suitable for boring, milling, drilling, tapping, grinding, and engraving. Standard Compliance: Manufactured according to DIN6499B standard. OEM and ODM Support: Offers logo printing and non-standard customization services. Fast Response Time: Inquiries regarding products or prices are replied to within 24 hours. Flexible Packaging: Available in plastic boxes, cartons, wooden boxes, or aluminum cases.