Package includes 5 rollers. Diameters: 0.98 in, 1.25 in, 1.49 in, 1.96 in. Lengths: 5.51 in, 7.48 in, 11.41 in, 13.38 in, 15.35 in, 17.32 in, 19.29 in, 21.25 in, 23.22 in, 25.19 in, 27.16 in, 29.13 in, 31.1 in, 33.07 in, 35.03 in, 37 in, 38.97 in, 40.94 in. Customization supported. Stainless Steel Unpowered Roller: replacement conveyor belt roller is made of durable stainless steel, waterproof and rust-proof, smooth, durable and long-lasting. Strong Load-Bearing Capacity: suitable for handling and transporting goods up to 41 kg. Unpowered rollers rely on the object's own gravity to propel movement, reducing mechanical failures and maintenance costs. Widely Used: conveyor rollers are cylindrical bars that slide along and under the conveyor belt. Commonly used in assembly lines, warehouses and manufacturing plants to transport goods. Use scenarios: - replace worn rollers on a gravity-driven warehouse conveyor to move boxes or pallets up to 41 kg. - retrofit an assembly line with unpowered rollers to enable gravity-assisted transport between workstations. - service replacement parts in a manufacturing plant conveyor to lower maintenance needs.