[Suitable for 99% of chairs] Swivel casters are compatible with most office chairs, as well as gaming chairs, desk chairs, executive chairs, swivel chairs, office chairs, and more. Our casters are compatible with many brands, including Herman Miller Steelcase, Aeron, Dxracer, Humanscale Freedom, Lazyboy Serta, Hon, Boss, and many more. Stem length: 22 mm. [Quiet] Hard floor casters are made of high-quality steel for added durability. Glide them over your office chair quietly. Even if you're working or entertaining guests in the evening, you won't disturb anyone because no one will hear you. [Suitable for all surfaces] Hard floor casters feature a durable, soft polyurethane rim to protect your floors for years to come. Your floors will never be scratched, cracked, or damaged. Our smooth-rolling swivel casters ensure a smooth, scratch-free surface. These office chair casters are ideal for hardwood, tile, parquet, granite, stone, concrete, or vinyl floors without scratching them. [Easy to Install] These office chair casters feature flexible, rust-resistant bearings for easy installation and removal. They also resist clogging from debris, sand, or hair. These hard floor casters come with removable screws for easy cleaning, making them a great replacement for old casters. [High Quality and Durable] These office chair casters with precision bearings are made of high-quality steel, providing high hardness and resistance to deformation. Common Sizes: 7/17" or 11 mm Smooth-Spinning Top Caster Wheel Bottom Caster Wheel Removable Screws Precision Ball Bearings Galvanized Steel Frame Solid Steel Rivet Stem Soft Polyurethane Material Installation: Two-Step Installation These wheels are easy to install. No tools are required to remove the old set of casters and install the new one. In just two steps, your chair will be back in operation.