1. The enlarged design of the holder ID hole optimizes the coverage of ER collet, shortens the tool overhanging length, and improves runout accuracy and machining stability.
2. The design of straight parts above and below the thread decreases the deviation of threads and improves accuracy.
3.Assembled with ER spring collet, ERS metallic sealed collet, and ERS coolant collet (FOD).
4. Balance: G2.5 25,000 rpm. The higher balancing grade and revolution can be done upon request but an additional charge is needed.