Usage Tips:Features: 1. PVC suction cup: super suction, reusable. 2. Uses: smooth surfaces such as automotive surfaces, bathroom glass and marble walls. 3. PC and ABS alloy: mainly used for auto parts, super bright, not easy to break, corrosion resistant. Specification: Material: PVC + Metal Color: Black, Red Diameter: 115mm Max Load Capacity: 22kg/48lb Good Tips: 1. Please make sure the body or surface is clean and smooth before use. 2. Not suitable for uneven surfaces or surfaces with large curvature. 3. Please do not overload the suction cup anchor. Note: 1. Suction cups are easier to attach to dry, clean and smooth surfaces. 2. Since the size is measured manually, there may be an error of 1-3mm. Thank you for your understanding. manual: 1. Place the suction cup flat on the contact area. 2. Pull the red iron key on the suction cup. 3. Check that the suction cup is firmly connected. material: The car suction cups are made of nylon, PC, ABS, PVC and metal hooks. High-strength D-shaped buckle, durable, wear-resistant and strong bearing capacity; the professional PVC suction cup adopts materials, super high strength suction, aging resistance, corrosion resistance, and can be reused. The suction cup hooks are ideal if you can't or don't want to drill holes. 4 suction cup anchors with 8 S-shaped hooks: The suction cup kit is also suitable for heavy-duty applications. The maximum load capacity of the suction hook is 22 kg (48 lb). It can be used as a car luggage belt tensioner for stationary use, suitable for outdoor travel, camping, trucking. Package includes: 4 D-shaped suction cups and 8 S-shaped hooks. Easy Installation: The suction cup can be installed directly, quickly and easily without screws. Simply pull the lever up on the suction cup, place the suction cup on a clean, flat, dry vehicle surface and press the lever. It will not damage your car. Suitable for very smooth surfaces: Before use, please make sure the surface of the car and the suction cups are dry. Car suction cups can only be used on glass, car surfaces, mirrors, tiles and other smooth surfaces. Not suitable for uneven surfaces such as patterned tiles. Multiple Uses: Suitable for securing luggage/awning/tent/tarp/sun sail, so these car suction anchors are perfect for moving, delivering goods, camping, boating, surfing, surfing, etc.