Using this Filmsticks clapperboard kit is easy. First, if you want to use a board or slate, just insert it into the 3.5mm slot on the clappersticks. The slot can fit boards of different thicknesses, so don't worry if they're not exactly the same. When you need to measure distance, use the marking tape with the Tongue and Groove insert to hold it in place. For storage, make sure to keep it in a dry place, especially since it's made of ABS Resin which can handle different weather but should still be protected from extreme conditions. When cleaning, use a soft, dry cloth to wipe it down. Avoid using harsh chemicals as they might damage the boards or sticks. And when closing the clapperboard, you'll notice that the design reduces side wobbling and stops light from getting through, giving you a smooth and professional - looking result for your film production.