I use a drill bit two sizes smaller than the weight. YOU will not need to attach it to a drill, but simply hold it in your hand and jus twist. Be careful, you don't wnat to take out to much foam.

Another thing to remember about a patent, any one can copy anything they want(patented)...as long as they don't do it to profit.

Billy Elkins

www.thecreekbank.com
It's easier to let the cat out of the bag than put it back in