Check the listing for details. Anti-Slip Dia 7/16" Office Chair Glides Bell Chair Wheels Swivel Caster Wheels. Condition: New. Listed at 11.15 USD. Specification The office chair bell glider will fit for most office chair, school chairs,games chairs which stern diameter 11mm )(7/16 inch) as an alternative solution to the roller casters, But not fit for IKEA chair which stern 10mm 1.18 inch overall height when installed-similar to the height of most small chair casters. This office chair accessories or office chair glider can be slid to convert any office chair or desk chair into a fixed type 1.18" Diameter round bottom width x 0.5" top width x 1.38" overall sliding height-similar to most small chair casters. D Heavy load weight is 110 pounds each gilder bell,so a set of 5 supports 550 pounds Soft plastic base-protect your soft floor without using felt pads. 100% hassle-free purchase-If you have any problems with your products, please contact us and let us know, and we will send you new products for free. Easy installation .Use the same mounting rods as most small chair casters to attach to the chair base. The standard 7/16" x 7/8" (11mm x 22mm) clamp ring mounting rod can be attached to most standard chair or stool bases-please measure yours before ordering On Sep 24, 2023 at 14:42:20 PDT, seller added the following information: