The Albion Green 6 Wheel Roller Bearing with a 4″X2″ size is a high-quality casters and wheels product designed for material handling in industrial and business settings. Made by the trusted brand Albion, the roller bearing is part of the Series #30 model and is available in a quantity of 1 each or 4 ea. With its durable construction and smooth operation, this caster provides reliable support for various uses in the material handling industry.