Specifications

1.The High-performance tungsten carbide rotary burrs provide maximum cutting edge stability
2.high quality with reasonable pric

Includes the following:
Cylinder with Ball Top: C1020X06b or American Inch: 3/8" x 3/4";
Ball Shape: D1009X069b or American Inch: 3/8";
Arc Cylinder with Ball Top:
F1020X06b or American Inch: 3/8" x 3/4"
F1325X06b or American Inch: 1/2" x 1"

All with 150mm(or 6") long shank;