Patented self-adhesive + stronger self-adhesive than conventional self-adhesive suction cups and suction cups. Can hold up to 10 kg. No drilling. No damage. All 304 stainless steel metal can ensure beauty, quality and service life. 304 stainless steel stainless steel design can resist daily scratches, corrosion and rust. Surface-polished stainless steel surface to ensure that every detail of the modern appearance is perfect. Easy installation - just wait 24 hours before use. Attaches to smooth or rough surfaces. Standard: 1. Do not install this product on painted walls, wallpaper or other soft or uneven surfaces. 2. Excess glue is easily scraped off with a knife. Wait for the glue to dry, then peel it off. 3. If the product is wet, the glue will take longer to dry. Please wait 48 hours or more before using. 4. If the product is moved to another location, new 3M tape and Wangel glue are required. Features: Size: 8.5cm*6.2cm*5.5cm/3.4in*2.4in*2.2inWeight: 102 g / 3.6 oz Material: stainless steel Surface treatment: polished surface Installation method: wall installation, Wanger glue + 3M tape (zhongchengdaye)