Made of virgin rubber with a 2-inch center hole, it fits Olympic bars with diameter of 2". Effectively avoid bouncing and protect the floor by choosing high-quality materials. Labeled in both LB and KG for easy recognition. Weight plates can be used to perform muscle-strengthening exercises, endurance training, or to increase flexibility and balance. 160 LB Set: 2x 10LB, 2x 25LB, 2x 45LB, multiple packages, we also provide multiple weights and colors. This set ships in multiple boxes, they may arrive on different days.