later I was looking for a trimmer head that would fit my Fine Laminate Trimmer (just under 1 3/16 inch hole in the metal base) and it fits almost perfectly. Place a 1/4" filler on the base to get the bevel size you want, but that's up to me, not Amazon or Kempton. The drill diameter is exactly 1 3/16 inch. I only had to bevel about 6 feet from the cottonwood siding that was installed, so I cannot legally comment on the durability of this drill. The cut I made was smooth and without thoseβ¦