A real bargain for you: This one is strong and sturdy. Manganese raceway and Dust proof ring are not something you'll see everyday. This one will last very long at minimum maintenance effort. The wheel is soft and protected by 2 covers.
A rare Heat resistant caster that have double bearings and convenient aluminium brake. The caster is also designed to last long, easy maneuver and very reliable. Load capacity is 180 kg per caster, so it can bear large and heavy package