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 no longer worry about falling off . 2. Advantages: quick installation in 5 seconds, 8 years of long-lasting adsorption, resistant to humidity and water, not afraid of temperature changes. Automatically fills the rough surface one millimeter away from the dent (very powerful feature), 2-3 times increase in adsorption, unique 60 degree locking design. 3. Can be washed in tap water, repeated use. 4. No need for punching, nailing, gluing, waterproof and moisture resistance, super strong adsorption force can be dismantled and reused, and there is no problem in humid environment. 5. Immediately lock the vacuum cleaner, you can use it indefinitely. You can also perform the factory default one-turn recovery. Just like new, turn it gently and hear the sound, and the vacuum is locked Just suck, lift is no longer a problem, turn left, push, then right, start restoring original factory settings, also called vacuum setting, just like new.