Iron palm for those on the go.
Since their was a thread about IP effectiveness a few posts down I thought I would throw out a post on the real deal. I am not sure if anyone here carries fist-loads, I personally do as part of my own self defense carry and have for a number of years.
If not I would recommend them greatly. The below website offers a variety of choices for sale. I and the wife have the Comtech Stinger but I also sometimes carry a koppo stick instead.
http://g2max.bravehost.com/kubotan02.html
Now if you want to talk REAL iron palm, then their is nothing even close to a flat sap. It is my favorite carry, but be carefull where you live due to legal issues and understand those personal choices.
http://combativeconcepts.org/ss_sap1.jpg