STEALTHO Heavy Duty Office Chair Wheels, Set of 5-3 Inch Patented Roller Blade Casters for Hardwood, Tile, Carpet - SGS-Tested 650 lb Capacity, ABEC-9 Bearings, Fits 7/16x7/8 Stem, Not IKEA

US Patent No 10,434,820 covers the full caster architecture, validated by a 100,000-cycle SGS durability test; soft polyurethane glides silently on hardwood, tile, vinyl, and low-pile carpet with no scratching

Standard 7/16 x 7/8 inch stem snaps into Steelcase Leap V2, Herman Miller Aeron, Mirra 2, Secretlab, and DXRacer chairs in 2 minutes with no tools; IKEA chairs use a 10mm stem - measure your stem first

Japanese steel body, triple-pressed for strength, supports 650 pounds total across 5 wheels at 130 lb each; ABEC-9 radial bearings sealed against dust, moisture, hair, and pet fur for quiet rolling

Caged thrust bearing absorbs vertical load from sit-to-stand transitions without loosening; quiet enough for apartments where neighbors hear every move; Navy and Clear charge under daylight or lamp light and glow softly in dark rooms

Adds about 1 inch chair height vs standard 2 inch casters; rolls best on low-pile carpet under 1/4 inch pile - shag and thick rugs resist rolling; 2-year manufacturer warranty against bearing failure