Seeking top-notch casters in the 4" category? Look no further than the 4" x 2" Unilast. This caster is a symbol of quality, tailored for individuals who demand nothing but the best for their caster needs. Combining robustness with a lasting build, it assures smooth glides and extended durability. Elevate your mobility with CasterHQ's 4"Unilast Wheels.