theirs different types.

the best ones i know of are the pen style ones from rich hinderer made from titanium but they are expensive.

the cheap ones would still work the same though.

their is a bunch of pens now that are designed to pull double duty as kubatons as i'm sure you know.i have handled one from MIL-TAC,BENCHMADE & SUREFIRE.i liked the surefire one the best because it twists open as opposed to having to unscrew a cap which i would probably loose and its much more hefty and looked classier imo

i think the hinderer ones are cooler though and would rather have one of those.

here's the surefire which runs about $125



hardened ball bearing "glass breaker/head basher" <img src="/ubbthreads/images/graemlins/grin.gif" alt="" />



broken down



i'd rather have one of these cheap "throw away" ones for actual self defense although the courts would nail someone to the wall if they actually used one on someone.