1-7/8" Diameter Twin Wheel Black Nylon Hooded Caster and Insert Plug, Set of 4

Construction Well-spaced twin 1-7/8" wheels for exceptionally smooth running action. The wheels feature a hard, abrasion-proof nylon surface which is particularly suitable for soft floor coverings such as carpets. Each caster is rated for 88 lbs (40 kg) load-carrying capacity. The caster swivels freely 360 degrees for easy mobility.

Installation
Each caster is securely attached with an included plastic socket fitted over the steel caster stem for press-fitting into a 10 mm hole in the target furniture item.