Here’s a custom set of rigid casters I just made for a mid-century modern table. The handmade forks  are roughly polished and sealed with a durable satin coat. The cast iron wheels are painted satin black. Weight is around 10 lbs per caster. These are priced at $295 per set and you won’t find them anywhere else as I’ve looked. Non polished casters are $250/set.
Some casters have a built-in brake design. These casters are frequently used in institutional, industrial and medical settings. Gurneys and hospital beds use this design, along with countless types of industrial carts.