good idea, but all my tools are across the continent, there isn't even cell phone coverage where the boat is, around here a Fein is what you pay when you get caught speeding. I guess I could do what everyone else does, buy a cheap one at Home Depot and then take it back when I'm done with the job . It would be a substantial job to cut out the whole seacock - its near the turn of the bilge, solid vacuum bagged glass about 1 1/4" thick.