• Rubber Construction , Very low noise on drop
• Use with an weight bar or use as hands-on weights (without the bar) for weight assisted sit-ups, roman chair back extensions, overhead presses, lateral -shoulder raises, oblique twists, etc.
• Higher Impact-resistance (low bounce) for longer life and safety.
• Excellent durability good finishing and complete safe for floors.
• Hole Diameter: 2.8 cm