03_aclu03_gen_liberty.jpg. Since George Washington's election as the nation's first president in 1788, there have been a total of 43 presidents but only 16 chief justices. The longest served for 34 years, the shortest served for less than one year. Six have resigned, nine died in office, and one was an unconfirmed recess appointment.
What are bumper plates? Bumper plates are a type of weight plate for Olympic weightlifting, powerlifting, CrossFit-style workouts and more. Unlike the common iron or steel metal weight plates or discs, bumper plates are made of almost 100% rubber or urethane, with a small metal insert in the center. 1  Why use bumper plates?In short, bumper plates are designed so that you can drop a barbell that is loaded with weight plates directly on the ground.
Depending on specific needs, some designs are better suited than others. They also differ in terms of build material and weight. As a starting point, the standard front factory bumper is an aluminum plate over the factory rails with plastic end caps and weighs 27 lbs (without the tow hooks). The rear is entirely made of plastic with the metal mounting plates and only weighs 15 lbs.