Product description · The ER nut adopts open end or annular groove design. · High quality medium carbon steel for the whole body casting with high strength.
ER40UM Hand Wrench Works on ER40 Collet UM Type Nut · 1. Material: 45# · 2. ER spanner heat treatment hardness: 40-45 HRC · 3. ER spanner appearance do ...
Cylindrical Shank / Straight Shank Collet chuck also called Baby collet chuck because of small size and same chuck which comes in BT40 or big tapers ...