Extra Large Office Chair Caster Wheels Replacement,2.35"(60mm) Wheel Diameter,Standard Stem Size 7/16"(11mm) Compatible with Most Chairs,Heavy Duty up to 600 Lb Max Weight,Set of 5 UNIVERSAL FIT-Fits most standard chair bases with its 7/16"x7/8" (11mmx22mm) grip ring mounting stem HEAVY DUTY-Using precise manufacturing techniques,our high quality wheel built to last a lifetime, supporting 120lbs per wheel for a total of 600lbs per chair FLOOR PROTECTION-Works Perfect On Carpets Floors.Stop damaging your floors.No more scratches, scuffs, or slides EASY INSTALLTION-Each package contains five (5) wheels.Easy pull and snap installation SATISFACTION WARRANTY-Meet ANSI/BIFMA standard. Lifetime Warranty