Desktronic Office Chair Caster Wheels Set of 5 — BIFMA Certified, 3X More Durable, Fits 99% of Chairs, No Chair Mat Needed, Safe for Hardwood, Tile & Carpet, 551 lbs Capacity (Black)

["BIFMA Certified — 3.5x More Durable: Polyurethane tread with precision ball bearings — tested to last 3.5x longer than the industry standard. Bifma certified for professional-grade performance. Set of 5 wheels, 3-inch design, 11x22mm stem.","Safe On All Floors — No Chair Mat Needed: Scratch-free polyurethane wheels glide silently on hardwood, laminate, tile, vinyl, and carpet without damage. Eliminates the need for a floor mat — saves space and money.","Installs In 30 Seconds — No Tools: Simply push in to install, pull out to remove — no tools, no screws. Fits 99% of office and gaming chairs with standard 11x22mm stem. Note: Not compatible with 1KEA chairs.","Holds Up To 551 Lbs: Industrial steel core with polyurethane tread supports office chairs, gaming chairs, and heavy furniture — whisper-quiet rolling at any load. Durable enough to hold a refrigerator.","Whisper-Quiet For Work & Gaming: Precision ball bearings deliver smooth, silent rolling whether you're at a home office desk or gaming setup. Premium look for home and office — upgrade your chair in 30 seconds."]