1.Specification:Package includes: 5 Pack Rollers. Roller Diameter (Ø) 50mm(2 Inch)Shaft Diameter: 12mm(1/2 inch)Load: 25100kg/50200lbs. Place rollers at closer spacing to handle more weight, and our rollers will tackle the task without compromising efficiency. 2.Stainless Steel Rollers:Constructed of stainless steel, rustresistant, waterproof, smooth and durable. These rollers operate quietly and produce minimal vibrations ensuring smooth and efficient operation. 3.Spring pressin Mounting: One of the standout features of the HeavyDuty Conveyor Roller is its spring installation mechanism, which makes assembly easy. The innovative design allows for effortless installation simply push the spring in or pull it out from the other side to securely install the roller into the conveyor frame. 4.Low Noise: In the conveying process, the powerless 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 of the operator. Stable and reliable movement, quiet operation (Please confirm the size of roller, frame, width, and roller centers you need carefully before ).