These 4pc castor wheels are perfect for small furniture trolley wheels, with a swivel and fixed design for versatility in movement. The black wheels have a 40mm diameter, making them suitable for a range of furniture items. Made in China, each unit consists of one trolley wheel, offering a smooth and efficient way to manoeuvre your furniture. Ideal for use in business, office, and industrial settings, these caster wheels provide a reliable and durable solution for material handling.