The qualification one ton, means that the axles can carry up to one ton of cargo (and or have one ton on the tow hitch, not on the bumper but on a bolted on hitch receiver.)
No - a 2 inch ball would be 50.8mm across.
http://www.tractordata.com/threepoint.html
Increase in frequency only.
Class I or 1
Yes, a 2003 hitch will fit a 2005. If you look at Liberty hitches for sale online, they state they fit 2002-2007 Libbies.
U-Haul has a wide range of towing hitches and 3 different classes of measurement. Their store features 10 types of hitch and 13 parts including the receiver. Also they offer a hitch installation service where you can schedule appointment and have a professional fit the hitch for you.
The hitch receiver on a 2003 Ford Explorer is 2" x 2".
Install a receiver on the truck and then purchase a drop hitch of your choice. Receiver will cost you around $125 and the drop hitch around $35 with ball. A receiver type hitch is the only way to go. Towing off the bumper is a bad idea.
Yes, with the proper receiver and hitch.
No, this hitch is no longer being used in North America and would need to be replaced with a square receiver in order to use bike racks and the like.
U-Haul
Yes, but not a bumper hitch. Install a undercarriage trailer receiver hitch system.
A hitch is a pattern where the receiver runs upfield then stops and moves toward QB for the catch
Trailer Hitch Cargo Carriers add storage capacity to your vehicle. It slips into the hitch receiver on the back of your tow vehicle and locked into place with a hitch pin.
Make sure to check the ball size and hitch size are the same first. Other then that yes, it just means the ball can withstand less weight then the receiver hitch.
Reese offers trailer hitches that fall into three different classes. They are in the categories of Receiver, HD-Receiver, Multi-Fit, Motor Home, 2-1/2" Receiver, and 3" Receiver. They also have many accessories to customize each trailer hitch to your vehicle.