An attack roll represents your attempt to strike your opponent on your turn in a round. When you make an attack roll, you roll a d20 and add your attack bonus. (Other modifiers may also apply to this roll.) If your result equals or beats the target's Armor Class, you hit and deal damage.
Re: Trailer hitch for under $170 installed! this is a really old thread, but here's 2 helpful fats- 1. the curt hitch has been redesigned so it no longer melts anything. 2. i saw a prius with a uhaul hitch yesterday, and it loked like an 06 prius. #8 Feb 14, 2009.
If you were to install it on your own, you will need to consider the following parts: the hitch receiver, ball mount, hitch balls, pin and clip, and the wiring. A hitch receiver, depending on the max weight and part, can cost about $125 to $275, while a ball mount will in the $20 to $40 range, depending on the drop and length. Lastly, most hitch balls will be $10 to $20, the pin and clips will be about $3 to $6, and wiring kits, depending on the make and model should be in the $50 range.