- Universal fit and compatibility: fits 99% of rolling office and computer gaming chairs, including Herman Miller, Steelcase, Aeron, Dxracer, and other swivel chairs. Not compatible with IKEA chairs. Stem size is 7/16" x 7/8" (11 mm x 22 mm). Easy 2-5 minute installation: pull out old wheels and push in the new casters. - Double bearing construction: 3-inch heavy-duty casters with stainless steel bearings; rollers made of industrial-grade steel, precision ball bearings, and durable polyurethane. Uniform hardness, excellent wear resistance, smooth 360° steering, rust-free, long service life. - Smooth, quiet performance: high-quality components provide stable load-bearing capacity up to 650 lbs, smooth and quiet operation, and no damage to floors. Robust and durable for everyday use without disturbing others. - Floor-friendly, no mats needed: casters will not scratch, stain, or damage floors. Safe glide on wood, hardwood, laminate, vinyl, tile, and carpet. Note: carpet performance depends on pile height; high-pile carpet may roll less smoothly than low-pile. - Use scenarios: - Home office: upgrade a chair on wood or tile floors for easier movement and floor protection. - Gaming setup: suitable for rooms with carpet or hard floors, providing quiet, smooth mobility during sessions. - Shared workspaces: frequent chair relocation without disturbing colleagues or family.