The suction cups are made of high-quality ABS, PVC, and metal. Their unique design includes a red adjustable wrench on the top and a sturdy, wear-resistant D-ring, providing strong suction and a long service life. Each suction cup can hold up to 10 kg. With our heavy-duty suction cup anchors, you can hang almost anything. Whether for camping, moving, or cooking, their versatility makes them the ideal tool. These suction cup hooks provide strong absorption force and make lifting or pulling objects easy. Simple and convenient to use, simply place the suction cup on a smooth, clean surface and press the handle to firmly fix it. Lightweight and compact, they are easy to carry. These suction cups are perfect for car camping, car awnings, boating, and securing tents and tarps to cars and trucks (roof rack mounting). Ideal for moving, luggage handling, camping, awnings, events, boating, biking and much more! You will receive 4 suction cup hooks and 8 S-hooks.