Onishi Shiitake Log Drill Bit with Stopper (No.33) 12mm, made in Japan.
• Drill bit for making inoculation holes in logs for shiitake mushroom cultivation.
• Equipped with a stopper that stops the drill's forward motion at the set depth without rotating, so the log is not damaged.
• The stopper position can be changed to set one of two drilling depths.
• Compatible with sawdust-based spawn (oga-kin) from any manufacturer.
