The concept behind da caster is to smoothly harmonize with the design of furniture or fittings while maintaining a distinct presence as a caster. Rather than a ball-bearing configuration with an axle and bearing, the basic structure of a conventional caster, the da caster is characterized by a sliding configuration that does not use an axle or bearing. The da caster structure comprises an aluminum shell, a roller and an internal ring made of a special resin. This composition results in a ring-shaped wheel with a central hole a hubless caster that possesses sufficient strength and solidity yet seems to float.