X-CORDS Paracord Fire Starter Paracord Bracelet Buckle Whistle Buckle Combo Fits all Paracord 550 750 and 850 Cord Survival Supplies FIRE STARTER BUCKLES WITH WHISTLE X-Cords tested and approved to be the most durable Flint on one side with REMOVABLE striker/scraper on the other. Very Loud whistle buckle to alert others you need help No one plans to get lost These survival tools are on your wrist all the time Used for making paracord bracelets, dog collars, lanyards. and other survival gear that you can carry every day so you have it when you need it.