The SOLE SW106 Weight Plate set is designed for Olympic-sized bars and have a solid center sleeve. They offer exact contact between the plate and the bar. The plate has premium rubber-coating for security and floor protection during dropping. Full weight sets including 2.5, 5, 10, 25, 35, and 45 lbs. These Weight plates work perfectly with the Sole SW111 Olympic-sized bar, and are made for daily use in your home gym.