One of our most popular selling drill bits! This "made for the mushroom industry" drill bit is for use with sawdust spawn inoculations and is a perfect match for our handheld brass sawdust spawn inoculation tools. The machined drill bit stop sets the depth to match the tools' volume resulting in properly filled inoculation sites. A self-feeding screw tip pulls the bit into the log. The 12mm soft steel bit is best used with drill tools turning over 2,500 rpm and has excellent performance in our angle grinder adapter. This bit will drill about 300 logs before it will need sharpening. This bit is NOT covered by warranty when used in CORDLESS drills or CORDLESS angle grinders.
Note: A 12mm or 12.5mm drill bit can be used for sawdust spawn inoculation.