Collet chucks ER Series is Europe’s most popular collet system used to maintain concentricity for drilling and milling process. | | Features & Benefits | • Collapsing collet design for versatile used on a range of diameters | • Designed to maintain high concentricity for accuracy | • Long reach options available to give access into deep recesses | | Typical Applications | • Drilling | • Milling | | Notes | • BT = BT-MAS 403 |