There are several items that are essential when putting together a Save-A-Dive Kit, Cylinder Valve O-rings, Fin Straps, Buckles, etc. One of the most important items is the spare knife strap. Ocean Pro's Universal Knife Strap is a Durable Depth Compensating Rubber Strap that will fit most all dive knife sheaths and can come in real handy if you or your buddy are in need of a spare strap. Don't ruin a day of diving due to the lack of sparer's!
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