Cost Savings: Powerless rollers rely only on the object's own gravity to propel the movement, reducing mechanical failures and maintenance costs for you Quality Materials:Conveyor Belt Rollers are made of of a stainless steel,rust-resistant,waterproof,smooth and durable Low Noise: In the conveying process,the Conveyor roller does not need to be driven by electric equipment, and its own friction and the sliding sound of the items are very small, which reduces the noise interference Easy Installation:Spring press-in Mounting,simply push the spring in or pull it out from the other side to securely install the roller into the conveyor frame Application: The conveyor rollers are cylindrical-shaped bars that run along and underneath a conveyor belt. Normally used in assembly lines, warehouses, and manufacturing facilities to transport goods