York Barbell "ISO-GRIP" Steel Olympic Plates feature solid steel composite construction, which is stronger and denser than cast iron. This allows for a thinner plate, plus, creates larger gripping surfaces for easier and safer handling than smaller hole iron grip plates.
These steel composite plates are less prone to breakage if dropped than traditional cast iron plates.
York Steel Grip Plates are made with a thicker hub. This creates an "anti-pinch" design due to the spacing between plates when loaded side by side on bars and machines. Plus, the thicker hub keeps the plate edges off the floor when lying flat for easier pick up.