These are additional BT30 Handles to be used with ATC spindles for example the 3kW ATC spindle we sell.  As you can see in the pictures, the machining is of a very high standard and the runout is <0.003mm.  The collet interface is ER20 which ranges from a 1mm collet to a 13mm collet size.

The handle come with a 45° pull stud and will require a ER20 collet to use it.

Specifications:

• Handle model: BT30
• Length: 70mm
• Angle of included pull stud: 45°
• Collet interface: ER20
• Material: 40CR Steel
• Runout: <0.003mm
• Maximum speed rating: 8000RPM