#500-64-GY-BL-FR-NB--2--1/2 in. Classic Caster, Grey Wheel, Black Yoke, Friction Ring, No Brake
Finish: Black
Wheel Diameter: 2-1/2 in. (64mm)
Overall Height: 3-3/8 in. (85mm) Mounting Method: 7/16" x 7/8" (11mm x 22mm) Friction Ring Stem (fits standard office chair)
Brake: No
Load Rating: 100 lbs (45 kgs) per caster
Wheel / Tread Material: Soft Polyurethane Tread (safe for hardwood floors)