Hampton Fitness has redesigned our classic bumper plate to meet the modern needs of today's power lifting community of athletes. Our slim line design will allow the user to add more plates to their bar, as well as quiet the impact when being dropped. The precision plates are machined from a solid piece of steel and are coated by over 1 inch of virgin rubber around the outer diameter. Which in return keeps the bar and plates from bouncing too much when being dropped. The plates are centered by a stainless steel hub for a snug fit that prevents the plates from moving during the user's lift. These sturdy and colorful 45-, 35- and 25-pound plates are backed by a 5-year commercial warranty. The 5- and 10-pound training plates are also constructed out of 100% virgin rubber and allow the user to make much more incremental jumps in weight lifting.