The clamps are made of stainless steel for more durability. They have a variety of uses, and these clips can be used not only for above-ground pool covers in winter, but also for towels, clothes, and quilts. You can safely use them outdoors, they are strong in all weather conditions. It is very non-slip, not easy to crack, no burr. Because of their fine workmanship, these clothespins hold things tightly and are less likely to break. Features -Color:Grey -Material:Stainless steel, PVC -Size:5.50X2.20X2.10cm/2.16X0.86X0.83in - Multi-purpose: suitable for different occasions, such as winter pool cover fixing, hanging clothes, hanging quilts, hanging pants, etc. - Stainless steel pool cover retainer is durable, non-deformable, and will serve you longer when used outdoors for a long time. - Our products have resistance, rust resistance and pressure resistance, which can be used outdoors for a long time to provide you with services. - Can give it to your friends as a housewarming gift, they will love it and help them in their daily life, saving them time. - Stainless steel clothespins are durable, compact and easy to store for next use, saving your storage space. Package list: 30 cover clips