BUILT-IN STRONG GLUE: Load capacity up to 5kg, offering higher adsorption power than conventional suction cups. The suction cup features a vacuum locking ring that effectively prevents air pressure from loosening the grip, ensuring a firm and secure hold. NO DRILLING REQUIRED: Installs in just five seconds by placing it on the surface and pressing the safety lock switch. Resistant to water vapor and suitable for use in humid environments such as bathrooms. PREMIUM QUALITY: Made of high-quality ABS material, durable, lightweight, and portable. Designed for long-term use without compromising strength or performance. LONG-LASTING PERFORMANCE: The adsorption membrane has memory function. When changing installation locations, simply rinse the suction cup under tap water and let it dry completely before reuse. VERSATILE APPLICATION: Suitable for various surfaces including glazed ceramic tiles, glass mirrors, patterned tiles, frosted glass, and lacquered wood surfaces with a convexity of less than 1mm. Ideal for mounting hooks, drawer handles, and other accessories. SPECIFICATIONS: Material: ABS Suction Cup Diameter: 6.4 cm Dimensions: 6.4 x 6.4 x 5 cm Package Includes: Glass door knobs