ABS plastic frame is durable against external forces. Also wear and tear, water and detergents. The wheel has a unique locking system that is very beautiful and the operating force is significantly lighter than similar products. Rubber treads are soft, ride smoothly, non-marking and make less noise.

Just acceptable quality: steel bracket is thin with just (again) average bearing & wheel quality. However the price is cheap and you can still be happy if using the caster for light duty as the ball bearing will offer easy manuevering.

Reliable caster for heavy duty needs. 6.0 mm of steel bracket thickness with double ball bearing raceway. Flat PU tread wheel creates less noise when operate.