Product information “ER-Precision collet | stainless steel ER20 | 428ESP | < 5 µm | O 3,5 – 3,0”
– Rustproof
– Stainless steel 1.4021 x 20Cr13
– HRC 43-47
– Longer-lived than standard collets
– Higher repeat-accuracy
– Maximum concentricity <0,005mm
– Honed collet boring
– Especially suitable fore wire EDM