1. The difference between the classic suction cup and the super suction cup: the super suction cup has a layer of black MOS polymer soft sealing material, which automatically fills the rough gap in the 1mm gap, rotates the lock and does not no longer has to worry about whether it falls. 2. Advantages: 5 seconds quick installation, 8 years long-lasting adsorption, moisture and water resistant, not afraid of temperature changes. Automatically fills the rough surface within one millimeter from the bump (very powerful feature), 2-3 times increase in adsorption, unique 60 degree lock design. 3. Can be washed with tap water, repeated use. 4. No need for punching, nailing, gluing, waterproof and moisture resistance, very strong adsorption force can be disassembled and reused, and there is no problem in humid environment. 5 . Lock the vacuum cleaner immediately, you can use it indefinitely. You can also do the one-turn recovery factory setting. Just like the new one, turn it gently and hear the sound, and the vacuum cleaner is locked! Just suck, lift is no longer a problem, turn left, press, then right, start to restore the original factory settings, also called vacuum adjustment, just like the new one.