Particulate respirators are the simplest, least expensive, and least protective of the respirator types available. These respirators only protect against particles. They do not protect against chemicals, gases, or vapors, and are intended only for low hazard levels.
A factory tow package usually includes heavy duty rear shocks/springs and an auxiliary transmission cooler in addition to the tow hardware itself, and sometimes they include a full size spare tire too. When a dealer installs it they just put on the hitch and wiring plug.
Towing and labor (TL) coverages and limits are different for each carrier that offers towing and labor coverage, but typically, it pays the cost of towing your car to a repair shop when it is unable to be driven and covers a specified amount of necessary labor charges at the place of the breakdown.