General description These 50mm two-wheel office chair casters are designed for a smooth and quiet glide on various floor types, including hardwood, carpet, tile, parquet, marble, and laminate. Made from durable rubber, they provide safe protection for your floors while supporting a maximum load of 340 kilograms. Technical specifications Color: Brown Material: Wood Item Weight: 2.87 Pounds Maximum Load: 340 Kilograms Wheel Width: 2 Inches Wheel Size: 50mm Mounting Size: 11mm x 22mm Installation Tool-free installation: No tools are required for replacement. Simply remove the old wheels and insert the new ones until the shaft is firmly fixed. Usage Designed for smooth and quiet rolling on various floor types. Ideal for office chairs to enhance mobility without damaging floors. Other information Please check your old model before purchase to ensure compatibility. This model (11mm x 22mm) is not suitable for IKEA chairs, which require 10mm x 22mm.