Using these DAL Cyclone T2530 3 - Blade Propellers is easy. Just mount them using the T Mount on your device. Make sure the hole diameter (either 1.5mm or 2mm) matches your equipment. When using, be careful not to apply too much force that could damage the polycarbonate material. For maintenance, clean them regularly with a soft cloth. Store them in a cool, dry place away from direct sunlight to keep the colors vibrant. If you notice any cracks or damage, replace the propellers right away for safe and efficient use.