The best buy in ferro rods is a StrikeForce. It has a 2 1/4" x 1/2" ferro rod for about $12.00. Just put the ferro rod in a vice and pull the handle off, it is a light friction fit (no glue). Toss the plastic parts in the trash! Then you will have a larger piece of ferro rod than the xxx Army or xxx Pro.

It is pocket size and works as good as any. <img src="/images/graemlins/cool.gif" alt="" />

For one hand use: stick your knife in the ground and scrape the ferro rod against the blade.