Yes, a single lifting device can often be used to lift objects of different shapes and sizes, provided it has the necessary capacity and adaptability. Adjustable features, such as extendable arms, variable hooks, or specialized attachments, allow for a range of lifting capabilities. However, it's crucial to ensure that the device's weight limit is not exceeded and that it is safe and suitable for the specific object being lifted to avoid damage or accidents. Always refer to the manufacturer's guidelines for the safe operation and weight limits of the lifting device.