●Product 1: reliable steel / aluminium rear carrier for 3 bicycles, expandable to 4 bikes, suitable for light e-bikes ●Product 1: carrier weighing only 14.5 kg, load capacity up to 45 kg ●Product 1: very wide extendible smooth-running roller extension, easy access to the boot even with mounted bicycles ●Product 1: bicycle protection by Atera "wheel protection wheel shells" and Atera "frame protection gripper arms" ●Product 2: adapter package for easy expansion of your Atera carrier by 1 bike space ●Product 2: With the extension kit, the transport capacity of an Atera Strada DL 3 bicycle rear carrier increases by 1 bike to 4 bicycles