Here's some information about these weight plates:
Material:
They typically consist of a cast iron inner core with a durable rubber coating, which helps reduce noise, protect floors, and prevent rust and corrosion.
Design:
These plates often feature a "tri-grip" or "radial" design with handles, allowing for easier handling and use in exercises that don't require a barbell, such as plate raises.
Compatibility:
With a 50mm (2-inch) diameter hole, they are designed to fit Olympic standard barbells and equipment.
Benefits:
The rubber coating enhances training safety and durability, while the design facilitates various strength exercises for home gyms or fitness centers.