COLLET HOLDER BT40-ER40-4

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″

Gauge Length: 4″

Capacity of Collet:1/8 – 1″ (3-26mm)

Draw bar: M16x2.0

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