COLLET HOLDER BT40-ER25-4

Made of Special Alloy Steel
Surface hardened to 58-62 HRC
Dynamically balanced to G2.5 at 20,000RPM
Taper to taper runout <0.0002″

Capacity of Collet:3/32 – 5/8 (2-16mm)

Draw bar: M16x2.0

Each of holders comes with a clamping Nut
Wrench and pull stud are not included