With Lanyard: The diving single hook adopts 3mm/0.1in thread diameter umbrella rope, and wear proof, tight and pull resistant, can glow in the dark. With Buckle: Can be used with gloves. When not in use can be buttoned to avoid touching coral rock and can be disassembled quickly when encountering water . Stainless Steel Material: The single hook and simple hook are made of 316 stainless steel material, wear and erosion resistant, not easy to rust, long service life. Compact and Portable: This stainless steel diving single end hook is small in size and light in weight, convenient to carry and store, easy to use. Ensure Your Safety: When you encounter an undercurrent while diving, you can insert this scuba diving single hook into the coral to fix your body.