Hexagonal shaft drill blades specialized for model building! Drills holes without worries about idling.
Hexagonal shaft with a diameter of 4 mm and 5 drill blades with diameters of 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, and 0.9 mm.
Hexagonal shaft meshes firmly with the connection part to pevent idling.
Compared to general drill blades, shorter o