Dive Rite Cave Line

Dive Rite Cave Line #21 by the foot

$0.06
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Dive Rite's #21 Cave Line is the gold standard for guideline in cave and technical diving. Sold by the foot, this durable nylon line offers high visibility, low stretch, and excellent abrasion resistance — exactly what you need when your life depends on finding your way out. Whether you're laying a primary line through a freshwater cave system or running safety reels, this is the line trusted by serious cave divers worldwide.

  • High-strength #21 nylon construction
  • Sold by the foot — order exactly what you need
  • Designed for primary guideline applications
  • Used by NAUI and IANTD cave divers globally

Ask us about complete cave diving reel setups — we stock Dive Rite spools, reels, and line in-store at Depth Finder's Scuba.

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I had a great time with Depth Finders Scuba. Brandon is an excellent instructor! He is very well organized, strong communicator, and patient! I look forward to diving with him again!

Dan Travieso
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Every time I've been in the shop the owners of depth finders were very helpful. Chris and Brandon are always knowledgeable and friendly. Looking forward to getting into some classes and travel with the shop.

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Not the closest to me but definitely the best around! Worth the trip every time it’s my HQ!

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I have purchased gear from Brandon at Depth Finders, extremely knowledgeable from rec to tec! Great customer service and a great selection of gear, 5 out of 5!!

Pete Lochner
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