You just set up your equipment for the first dive of your vacation in Saint Somewhere, as you Cam your Back Pack Buckle in place your Cam Buckle Breaks! The worst thing that can happen on a Tropical Vacation has just happen No BCD. Don't leave on a vacation without a spare Tank Band, why ruin a great holiday because of a few dollars. Always pack some spares. The Hollis Single DELRIN Cam Band Assembly is constructed from 2" (5cm) Wide Durable Nylon Webbing with a Box Stitched DELRIN Plastic Cam Buckle with a Wire Cam for Extra Strength. Cam Band is covered by a 24 month limited warranty and makes a great Save-a-Dive Kit Item.