From publisher blurb:
What you lookin at, mister? DON'T MAKE ME HACK OFF YOUR KNEES!
We present a new subrace of halfling for your character creation needs!
Steeljack halflings are a barbarous halfling subrace born in the turmoil of tooth-&-nail survival. Today, steeljacks band together in vast hordes that swarm over the steppes overwhelming everything in their path. Whether tremendous lizard or tyrannical warlord, nothing stands a chance against an angry steeljack!