Frog Legs have been producing wheelchair forks for a while now and have gathered quite a cult following for their suspension products.
Frog Shields replace traditional caster spacers creating a protective cover for the bearings that enable your caster wheels to spin with low friction.
Anyone who has had to clean their casters/bearings or dirt and hair before knows how much of a pain it can be. With the shields in place it will quickly become a rare occurrence.
They will fit 3, 4, 5, or 6″ diameter casters, sold separately.
Available from $39.99 USD for a set of 4.