This is the Hollis Finger Spool with Stainless Steel Snap Bolt Clip Features: Finger Spools Use: Gap Reel or Short Distance Exploration Small and Low-Profile Spool Fits Out-of-the-Way in Pocket or Clipped-Off to D-Ring Spool: Glass Filled Nylon Durability in Marine Environments Side Holes: For Clipping in Double-Ended Snap On Perimeter of Spool, Keeps Line Tight Premium Quality, Marine-Grade Stainless Steel Double-Ended Bolt Snap .073 (1.86 mm) Diameter Braided Nylon Line Breakage Strength: 220 lbs. (99.80 kg) #24 Braided Nylon Line The Hollis Finger Spool is sized appropriately for both warm or cold-water diving. The finger spool is available with 2-line lengths of 100' and 150' (30.5 and 45.74 meters)."