Made of stainless steel, our Paracord Planet Rope Clamps are resistant to corrosion, moisture, rust, and all temperatures. Our Clamps are strong and durable and will hold up inside or outdoors. These rope clamps can be used on different kinds of ropes and chains, and they make rope loop ends. DO NOT use these clamps for the following: Supporting athletic or playground equipment, the weight of a person or objects, or hang or lift loads. Our Rope and Chain clamps come in multiple size options to meet all your project needs. These sizes are: 3 millimeters in diameter with a length of 3/4 inches, 1/8 inches in diameter with a length of 1 inch, and 1/4 inches in diameter with a length of 1 5/8 inches.