a hydraulic tool for the installation of fencing t - posts into the ground without bending the t - post or causing damage or deformity to the top of the t - post , installs to the three point hitch of a tractor with hydraulic connections to the tractor hydraulic system , securing the post along its vertical length prior to insertion into the ground , the tool having an upper stationary bracket holding an upper section of the t - post within a t - post slot and a lower sliding ram bracket securing to a lower section of the post , the lower sliding ram bracket forcing the t - post into the ground by use of a hydraulic ram at a chosen depth .