1.High quality elastic steel material with long use time.
2.Shank of the Morse Taper Collet chuck MTB1/MTB2/MTB3/MTB4/MTB5
3.Suitable Collet:ER11/ER16/ER20/ER25/ER32/ER40
4.The precision little than 0.01mm with balance 10,000rpm. Higher precision also can be made by your demand.
5.Holder hardness:48-55HRC
6.The protrusion length is difference from 20mm to 200mm.
7.Suitable NUT & Wrench is also upon request.