frag plug common size?

[novahobbies]

Post title pretty much says it all: is there a common size for frag plugs? Specifically I'm looking for the diameter and length of the "plug" itself...I'm not overyly interested in the size of the bases. I need to know for a little project I'm working on.

Thanks!

 

[mrdc]

The plug my zoanthids came on had a base about the size of a quarter. I would say the stem on the plug is roughly 3/4" long and maybe a 1/2" in diameter.