First, these are high quality weights--I got them, wiped them off, and used them the same day. Low bounce, quiet, good for drops, and they are very sturdy. The weight variances are all quite accurate, too. Vulcan may not get as much mention as Rogue or Fringesport, but they really are offering a superior product at a better price. These bumpers are perfect for any setting from a garage gym to a commercial affiliate or strongman dungeon. Also, Vulcan helped me out when FedEx lost my first shipment: they took care of everything, and the replacement set was delivered speedily. I will recommend Vulcan to anyone who's looking to purchase fitness equipment, and I expect I'll buy from them again in the future.