The IKEA ALEX Drawer Unit Caster Wheel in black is a set of four 2" caster wheels designed for material handling and industrial use. Specifically made for the IKEA ALEX line of drawer units, these caster wheels provide smooth and easy mobility for moving heavy loads. With a durable construction and reliable brand like IKEA, these caster wheels are a practical and essential addition for any business or industrial setting needing efficient material handling.