Standard Hole Diameter – 2 inches (50.4 mm):
Olympic plates have a center hole that is 2 inches wide, designed to fit Olympic barbells.
Heavier and More Durable:
Usually made of cast iron, steel, or rubber-coated materials, Olympic plates are built for intense lifting and long-term use.
Uniform Size (Bumper Plates):
Bumper plates (a type of Olympic plate) have the same diameter regardless of weight, allowing for safe and consistent lifting, especially for Olympic lifts like snatches and clean & jerks.