About the only frog I use anymore is the STP frog. I think the thing is a killer. Here is the details from the manufacturer of the cutter...

http://www.riverroadcreations.com/stp_frog.htm

When I get the cutter out, I usually cut and tie a dozen of them at a time. Depending on how many I give away, thats usually enough for a season for me.

Brad