5pcs Germany KELCH brand Shrink Fit, Shrinker CAT40 metric end mill holders, please select 5 sizes from the following list:

4mm(ID diameter) x 12mm(nose end diameter) x 70mm(Gage Length)
4mm x 12mm x 70mm
6mm  x 21mm x 80mm
8mm x 21mm x 80mm
10mm x 18mm x 120mm
10mm x 24mm x 80mm
12mm x 18mm x 120mm
14mm x 27mm x 80mm

* Maximum 0.0002" TIR or better. 
* Balanced to G2.5/25000RPM.
* 360 degree tool grip along the entire length of bore resulting in an evenly distributed clamping force and superior concentricity.
* Ideal for end milling, drilling and other critical rotary tool applications.
* No need wrenches, Collets, set screws and other accessories.
* Coolant thru.
*  5/8"-11  thread