It's hard to find a flush bit this small and I had high hopes for it but I made 4 short (4 inch) plunge cuts with it bit at 1 / 2 inches through the walnut. Midway through the first cut the drill bit broke in stock, ordered a replacement and for a replacement, midway through the 2nd pass (third total for the project) one of the cutting faces broke midway. I was able to finish the cuts but they are VERY rough and I had to finish with a chisel. If you need it for a one-time job this will probably