Sortimo STS Loading Roller Set Side Rail 73 In x 4.9 In x 2 In Model 1000012253Sortimo STS Loading Roller Set Side Rail 73 In x 4. 9 In x 2 In Model 1000012253 The loading roller provides for convenient loading and unloading of heavy, long or bulky goods on the vehicle roof. Furthermore, it prevents damage to the vehicle roof as the materials do not touch the edge of the vehicle at all. The roller can be installed onto the side rails using the installation kit supplied.(Pictures are similar, decorative material not included;