Shiitake Bit Compatible with High Speed Rotations; Uses: 0.5 inch (12 mm) drill for embedded shiitake bacteria; Features: Spiral-type type perfect for deep holes; High speed steel is durable and can be used on hardwoods; The tip of the cone is attached to the tip of the cone, so there is no need to push it in. [Caution] *Please use with electric tools less than 1000000000000 rpm
●しいたけ菌を埋め込む穴あけにぴったり