Load Capacity: Supports up to 35 kg (77 lbs). Adheres to flat surfaces without drilling or adhesives. Suitable for indoor and outdoor use. Operates using negative pressure. Materials: Constructed from PP and TPU. Resists wear. Maintains stability under varying temperature conditions. Installation: Attach to smooth surfaces including glass, boats, cars, and RVs. Clean the surface with a cloth, press the suction cup to expel air, and lock with the red handle. Applications: Secures tents, awnings, and tarps to vehicles during outdoor activities. Used in domestic settings like bathrooms and kitchens. Design does not require wall drilling. Compatibility: Suitable for hanging items on glass, tile, or stainless steel surfaces. Not suitable for concrete walls or uneven surfaces. Color: Black. Material: Plastic. Package Contents: 4 * Suction Cup Hooks. Other products are not included. Notes: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.