i would either wait and see if nils comes out with an orange 8 inch, or call them and see if its in the works. the head is suppose to cut easier than the blue augers for use with the battery drill. another option might be to contact one of the nils sharpening services on the site and see if they can sharpen it differently for a battery drill. mine doesnt work on my 18 volt drill at all, its useless, i went to using the hand auger attachment and bought the tanaka powerhead for thicker ice. loving the tanaka