Maktune Technologies Heavy Duty Office Chair Wheels, Mute Rotating, Fits 99%, Black/Grey, Set of 5 Swivel Furniture Caster  (Pack of5)

?STANDARD SIZE?: Our caster wheel rollers fit most office chair models available, Standard stem diameter: 7/16"(11mm), stem length: 7/8"(22mm),Office Chair Caster Wheel Maximum Weight Rating: 100Lbs each wheel and 500Lbs as a Set of 5. ?EASY INSTALLATION?: Just pull out the old chair wheel and pop it out, then push the rod of the new office chair wheel into the slot until it is firmly fixed. It's like changing into a new chair. ?HIGH QUALITY WHEELS?: Made of high quality polyurethane. wear-resistant, light weight, easy to replacement and use, can protect hardwood, laminate, ceramic tiles, slate and all other hard material floors from damage and scratches,The office chair wheel are always firm and easy to control when rolling. ?WIDELY APPLICATION?: Suitable for most office chair,computer chair, gaming chair,executive chairs, work chairs, rolling stools, easy to slide on the hard floor made of carpet and polyurethane material, very suitable for home or office use. ?PACKAGE?: Set of 5 office chair caster wheels. if our items have any problems. please feel free to contact us