Material Rubber & Cast Iron Cast Iron Rubber & Cast Iron Cast Iron. Material Alloy Steel Alloy Steel Alloy Steel Alloy Steel Alloy Steel Alloy Steel Alloy Steel. Weight Plates For Strength Training. Weight Options 10lbs to 380 lbs 2.5lbs to 45lbs 2.5lbs to 245lbs 5lbs to 25lbs.
