Hotline: 16297 (9 AM to 8 PM) 
Hello, Sign in 
Cart 
The Extreme 30 KG Cast Iron Free Weight Set includes two 10kg and two 5kg plates for load progression. These standard-type plates use a 31mm center hole to sit flush on common bars. Dense iron stays compact, saving space on the rack compared to bulky vinyl options.
Key Features
- Baked Enamel Finish: Industrial coating covers the solid cast iron core. Stops rust formation in high humidity zones.
- 31mm Machined Hole: Precision-cut center diameter fits standard 25mm to 28mm bars. Eliminates plate rattle during rapid lifting movements.
- Ribbed Reinforcement: Molded internal ribs add structural density to the iron. Prevents plate fracture during accidental floor drops.
Frequently Asked Questions
Are cast iron weights better than PVC?
Iron plates provide higher density and smaller dimensions than PVC-filled alternatives. They won't leak filling or degrade under heavy pressure.
Will these plates fit an Olympic barbell?
The 31mm hole only accommodates standard 1-inch diameter bars. Olympic 50mm sleeves are too large for this specific set.
