A set of these casters is $11 more expensive than comparable casters online, I bought them because they have a higher load capacity and advertise double ball bearings. The fact is that in the standard configuration of most reels of this type there is only one ball bearing block in the wheel, the reel has double pivot bearings, which are standard for all reels, even close to this load capacity. They are reel traders and if they don't know how to describe their own product they don't deserve any business. I think they know what they're doing, and I give them my reward for willful deception.