Shock-absorbing plate casters have spring-loaded suspensions that absorb shocks and vibration when rolling over obstacles or rough terrain. They help prevent damage to the equipment the casters are attached to as well as any shock- or vibration-sensitive cargo that is being transported on it. Each caster's suspension can be adjusted to achieve the smoothest ride possible for a given application. Shock-absorbing plate casters have a mounting plate that attaches to the bottom of carts and other equipment to allow them to roll, reducing the effort it takes to move or reposition the equipment. The casters are available in swivel and rigid versions. The swivel casters can rotate 360°, allowing equipment to change directions while rolling. The rigid casters roll in a straight line. Two rigid plate casters will often be paired with two swivel casters to allow the equipment to both maneuver around curves and obstacles and maintain a straight course while rolling.