A: Replacement pilot bits are available, Klein Tools model # 31874
A: I used a battery drill. Worked perfect.
A: Yes, Klein Tools’ Carbide Hole Cutters can be used with a hand drill. They do not require an arbor.
A: The Klein Tools model # 31860 Carbide Hole Cutter is designed to cut holes in stainless steel and mild steel, iron, copper, and brass sheet up to 3/16 in. thick.
A: I don't have an exact answer, but the cutter blades are a bit less than 1/8 " wide. So, times 2, minus 1 3/8, the slug is about 1 1/8". It will have a 1/4' hole in the middle, and the edges of the slug will taper.
A: The inside diameter is approximately 1.175”