Fence Post Drivers Danuser is the driving force behind a good fence Hornet Post Driver Drive T-posts up to railroad ties like a pro with jackhammer style power cell for controlled high-speed performance. Flow Control Valve Tool-less Quick Change System One-person grapple option available Hammer Post Driver Drive T-posts up to railroad ties like a pro with up to 82,000 lb. of impact force per strike. The original one-person post driver. 40" drop hammer design One-person grapple option available Full stroke achieved with every cycle T3 Post Driver A small driver that delivers big time results. Drive t-posts up to 3" O.D. pipe at a rate of up to six strikes per minute. Operates up to 6 strikes per second Drives T-posts up to 3" O.D. pipe Versatile mounting options available