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 hold, ensuring a firm and secure vacuum seal. 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 moisture, making it suitable for use in bathrooms and other damp environments. PREMIUM QUALITY: Made of high-quality ABS material, durable, lightweight, and portable. Designed for long-term use with reliable strength and stability. LONG-LASTING PERFORMANCE: The adsorption membrane has memory retention. When changing installation locations, simply rinse the suction cup under tap water and let it dry completely before reuse. VERSATILE APPLICATION: Suitable for use on various smooth surfaces including glazed ceramic tiles, glass mirrors, patterned tiles, frosted glass, and lacquered wood surfaces with a surface unevenness 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