Our best Driver is (Driver 5) & I am partial to the Front-Clamp style. All one does is pull a Tee post out of the your Tractor Bucket and throw that T-post up in our driver barrel past the spring, Move forward into position and press down, reach once again into the bucket to pull-out another new T-post Pull up forward and throw tee post up in barrel and repeat time and time again. The faster and harder you work this driver the smoother the Driver operates. Good for new and used T-posts if the top ends of your posts are not mushroomed over. If you do reuse a lot of T-posts and the tops are beaten over or even twisted then (Driver 4) is the best for your operation. Driver 4 barrel is mostly open and can handle these used posts. All drivers are designed to hang straight and do swivel for any directional setting to your fence-row.  Best to position your Driver farther from your front tire & to one side. Throw a chain or rope over your bucket near your New Driver to use as a marker for setting in T-posts. When that chain touches the ground your T-post is in at the right depth. No more measuring each T-post. Now for very very extremely (Harden Ground) and small rocks beds a gas powered high pressure water sprayer would aid in by washing open & softening up each selected hole to allow you to press down your tee posts.  (Side-Mounts & Front-Clamps) hold our Drivers. Front-Clamps are directly sold to fit your tractor bucket and that is determined by the thickness of your bucket's cutting edge and inward 5 inches deep. (Side-Mount) do move our drivers out and over  4" more to the side than our Front-Clamp. However the knuckle postioning of the Front-Clamp does allows for a slightly quicker Driver recovery time. How to attach our Side-Mount onto your bucket. Fit Side-Mount & Driver together, stand them up on one of your T-posts. Lean everything up against your bucket at the most convenient highest outer edge or fartherst from right front tire. Tilt bucket ram out 3" to 5". (The smaller your Tractor the more tilt you would want) level clamp out & mark the holes off the Mount onto your bucket to drill or cut out. After driving in 6 posts with either type Clamp & Driver your job becomes routine so set your routine up with safety in mind. Any Questions please call 1-580-747-9288 and ask for Mike. We have a 30 day refund or exchange on all drivers and clamps. We use U.S. Postal to deliver our freight. The 2-3 day delivery has the best price for your money and along with our whole-sale pricing is still a great savings. We do own the exclusive rights by U.S. Law. Bucke-T-Driver is a subsidiary of Bucke-Tee, LLC certifies compliance with O.S.H.A. law. Any company attempting to copy our products Uncle Sam & Bucketdrive would graciously like to have a heads up.  Read safety information and disclaimer on website before operating our equipment.