IST 100 Feet Finger Reel/Dive Line Spool with Clip, Safety Equipment/Gear for Scuba, Cave & Wreck Diving BRIGHT VISIBILITY  Neon yellow braided nylon, perfect for low-light conditions. DURABLE CLIP  Double-ended bolt snap is convenient & reliable. COMPACT SIZE  Fits easily into a BC pocket. VERSATILE USE  Perfect for use as a safety line or for deployment of lift bags & more. MULTIPLE LENGTHS  Available in 15m (50 ft.), 30m (100 ft.) & 50m (165 ft.).