Don't let a loose hose fitting blow an O-ring and not have the proper tools and parts to fix it. The serious diver is always prepared to nip a dive aborting problem occur. That's just one scenario that these Wrenches can remedy. You ever see non-stainless steel tools when they have been exposed to salt water environments? Not a pretty sight. It also looks bad when you pull out your rusted open-end steel 9/16 x 11/16" to remove or replace a standard 9/16" or high flow 11/16" second-stage hose. Many of the new low-profile designed hose fittings may not even allow you to use a standard wrench.
Wrench Set also includes a 1/2" x 7/16" and 5/8" x 1/2" Wrench so you'll be able to work with the most common Hose Fitting out there. Look professional when you have to do dive gear repair or maintenance by using a clean and easy to maintain stainless steel dive wrench that is thinner than standard tools and allows you to get into those tight spaces. Wrench are compact with a 6" (15.2 cm) length, are a Must for a Safe-a-Dive Kit and make a great gift for that diving significant other or friend. Why not get one for both of you! Wrench Set is covered by a 24 month limited warranty.