3D Styrofoam Milling Drill Bit

3D Styrofoam Milling Drill Bit Features:

1. insert: 20 mm diameter, 20 cm length Collet: 16 mm diameter 5 cm length
2. insert: 12 mm diameter, 10 cm length Collet: 16 mm diameter 5 cm length
3. insert: 11 mm diameter, 15 cm length Collet: 16 mm diameter 5 cm length