8.5mm Drill Bit with stop, designed for use with 5/16 x 1 inch mushroom spawn wood plug dowels.

8.5mm Drill Bit with stop, round shank for use with drills.


Designed for use with most common size 5/16 x 1 inch mushroom spawn wood plug dowels.

Use this high speed drill bit to make holes quickly in freshly cut logs. Insert mushroom dowels of your choice into holes and seal with melted wax. Don't forget to keep logs moist for a successful harvest.