2" caster with 3/8" x 1" grip ring stem. Please use a caliper to measure the diameter of the stem. Most chair uses 7/16" not 3/8".*Hard wheel for carpet use.*Tested to BIFMA quality.*5 casters / pack.*Made in Taiwan.*This is screw stem caster whe
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Item# : SPM14745890632
Model # : H9135BP