High Quality Material- SUS304 stainless steel, surface: brushed. The use of high quality stainless steel greatly reduces the occurrence of scratches, corrosion, tarnishing and fingerprints in daily use. Double Gum Rubber Spring Slots- This anti-slip feature is good for fixation. Rolling balls automatically adapt to the thickness and easily and tightly grip each handle; also easy to release by lifting the handle. It can hang the handles whose diameter is 1.5cm-3.5cm. 2 Installation Methods- Two installation methods: adhesive installation, you can stick it on a smooth surface. You can install it with the screws provided in the package. It is necessary to do the drilling for installation. So this product is also applied to the rough surface. Waterproof Design- Made of premium T-304 stainless steel, it is suitable for all kinds of humid environment. You don't need to worry about when it will be out of glue. Spraying water on the hook can't affect the adhesive. Notes- The product should be pasted on a smooth surface, it is not suitable for rough walls, such as painted walls. Wait 48 hours before placing the items. Specifications Material: SUS 304 stainless steel Dimension: 9.6 x 4.6 x 4.5cm Package Contents: 4 x Wall Mounted Broom Holder/ 8 x Screws, Expansion Bolts