Properties:BUILT-IN STRONG Glue: Load capacity up to 5kg, higher adsorption power than conventional suction cups. Suction cup with a vacuum locking ring effectively prevents the suction plate due to the air pressure, which loosens the tension and firmly blocks the vacuum.NO BORING: Installs in just five seconds by placing it on the surface and pressing the safety lock switch. Not affected by water vapor and wall back to flood. Can also be used in the bathroom and other damp environments.PREMIUM QUALITY: Made of high quality ABS material, durable and portable. Ensuring quality and durability, lightweight but robust.LONG USE: The adsorption membrane has memory. If you change the installation location, you only need to wash the vacuum cleaner under tap water. After drying, the vacuum cleaner can be used again.Widely Used: Suitable for all kinds of drawers, hooks hanging. Widely used for glazed ceramic tiles, glass mirrors, pattern tiles, frosted glass, lacquered wood surfaces and other unevenness with a convex surface of less than 1mm.Specification:Material: ABSSuction cup diameter: 6.4 cmSize: 6.4 to 6.4 to 5 cmPackage includes:Glass door knobs