Our most popular selling drill bit! 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. Our most popular selling drill bit, the 12.5mm 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.
Note: We transitioned from using a 12mm to a 12.5mm drill bit for sawdust use. The extra .5mm makes the inoculation process easier and smoother, and provides a consistent fill just below bark level which allows for an optimal wax seal.