EXTERNAL EMERGENCY: This adjustable shackle buckle can be woven into a survival bracelet, which can be used as a lifeline in emergency situations. This also provides a safety guarantee in case of emergency evacuation or other situations. ADJUSTABLE DESIGN: The adjustment lock buckle adopts 3-hole design, you can adjust its size according to your needs. The adjustable design of the survival bracelet makes your use easier and more convenient. There is a small groove on the screw head of the U-shape shackle, so you can use it easily without extra tools. STURDY AND DURABLE MATERIALS: Our parachute cords in the paracord bracelet are made of durable polyester, which has the advantages of corrosion resistance and aging resistance. And our adjustable shackles and adjuster locks are made of high quality stainless steel, durable, corrosion and rust resistant. Wide range of uses: This outdoor paracord survival bracelet is very suitable for various kinds of outdoor activities like camping, boating, hunting, hiking and other sports activities. Parachute cords can be used to stop bleeding, make traps, attach temporary tents and for other purposes in emergency situations. PERFECT COMBINATION: Our outdoor survival bracelet set consists of 10 adjustable locks + 10 U-shaped buckles + 2 rolls of 3m black braided rope. They are perfect accessories for outdoor activities. Attention: Do not use as a fixed rope during mountaineering or rock climbing.