Honey-Can-Do SHF-04049 2-Inch Caster Wheels, 1/4-Inch Thread, Black, 4-Pack Comes with 4-pack of casters; Wheels are intended to fit honey-can-do brand shelving units One pair with wheel locks Combines with urban shelving units Easily move shelving units after installation Measures: 5 in L x 4.6 in W x 8.3 in H 12 7. Cm L x 11.7 cm W x 21.1 cm H