Using these DXE brake levers on your SurRon Light Bee is easy. Just grip the lever with your fingers and squeeze gently to slow down or stop your bike. When squeezing, use a smooth and steady motion for the best results. As for maintenance, it's a good idea to regularly check the levers for any signs of wear, like cracks or looseness. If you notice any issues, it's best to replace them right away. Clean the levers with a mild soap and water solution every once in a while to keep them looking good and functioning well. Also, avoid using harsh chemicals on the levers as they can damage the aluminium. When you're not using your bike for a long time, make sure the levers are in a relaxed position to prevent any unnecessary stress on them.