Set of 5, BoYeeBo Universal 3" Office Chair Caster Wheels, Heavy Duty Replacement Rubber Wheels, PU Rubber Quietly Rubber Casters for Chairs

• SIZE: Push in Stem:11x22mm (7/16"x7/8"), 3 inch in caster wheels. Simply pull your old casters out, then push this pop in stem casters, universally fit for various seats.
• PERFECT DESIGN STYLE: Office chair wheels is one-wheel mode, it makes everyone look more beautiful and practical. The heavy duty design supports up to 550 lbs.
• SMOOTH & QUIET DESIGN: Precision ball bearings in the caster swivel and axle provide smooth and easy rolling while don't cause any kind of squeaky sound and noise. And it will also help you easily change the direction of movement.
• SOFT RUBBER: This wheels are made of high-quality PU rubber, which are high mechanical strength, wear resistance, shock absorption and low-noise. It also has extra anti-dirty and self-cleaning actions.
• SAFE FOR ALL FLOORS: Smoothly and quietly silent roll around on any hardwood, ceramic tile, wood, carpet floors, cement floors without scratching, safe for all type of floors.

Size: Stem: 11 * 22mm / 7/16” * 7/8” (Width* Length). It is the standard size for almost all office chairs. Wheel: 3 inch in diameter. Capacity: 550 lbs max load weight. PS: NO TOOLS NEEDED Just pulls out the old casters and inserts the new casters, pushing them in until they lock firmly into place, no tools needed.