45lb Premium Olympic Rubber Bumper Weight Plate from Sportsmith

• Plate Diameter: 450mm (IWF Standard is 450mm)
• Plate Width/Thickness: 80mm
• Fits Olympic Bar - 2" sleeve
• 45lb Rubber Bumper Plate 100% Virgin Rubber
• Made from 50% SBR (Styrene Butadiene Rubber), 30% NR (Nitrile Rubber) and 20% BR (Polybutadiene Rubber). That's technical talk for a long life and high resistance to abrasion or chipping. 
• Minimal bounce and high durability
• Durometer Rating: 88 
• "Hooked" steel insert that won't pop out
• Weight Tolerance: +/- 0.5%
• Sportsmith branded
• Black