Danuser Industrial’s Postmaster/Slab Buster can drive up to a 14′ tall wood or steel post depending upon model. Can drive 3 8 diameter wood or steel post. Hammer weight is 275 lbs.; additional weight can be added for a total of 700 lbs. Drive up to 60 posts an hour. Need at least 12 GPM and 2000 PSI for hydraulic requirements. Grapple option picks up the post from the ground without additional hydraulics or controls. Tilt option will tilt up to 19º in each direction. Slab Blaster hammer weight is 400 lbs.; additional weight can be added for a total of 700 lbs. Break up to 9 thick concrete with reinforcement.