8.5mm Soft Steel Screw Tip Bit
This drill bit is a must have for quick and easy dowel inoculation.
The 8.5mm soft steel screw tip bit with stop collar is used for plug spawn inoculations like dowels. This made-for-mushroom bit is economical and works in both high speed (8000 rpm or greater) and lower speed drills, and can be resharpened. A self-feeding tip guides them.