2 ¾” mm wheel diameter. 1 ½” diameter interior opening. 275 lbs dynamic load rating per caster (3X standard furniture casters). Non-marking twin-wheel design suitable for both hard & soft flooring. Hygienic construction seals out hair and debris. (2) ABEC chrome steel precision bearings (keep free of moisture). 5-year limited warranty. Patent pending black friction sleeve stem mount slides into standard 7/16" sockets with ease.
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