No Ball Tweeter Single Tube Titanium Whistle Light Weight Classic Knuckle Style: Stone-washed

Style: Stone-washed

outdoor self-defense and standby defense

Material: zinc alloy Size: 110mm * 69mm Weight: about 180g Function: martial arts equipment is self-defense and life-saving

Crafts surface will inevitably have minor scratches and mold marks

It can be mastered almost without special practice

No Ball Tweeter Single Tube Titanium Whistle Light Weight Classic Knuckle Style: Stone-washedMaterial: Titanium Size: 51mm*7mm Weight: about 3. 2g The all titanium design and embedded whistle core adopt stamping technology and are stable and durable. The whistle is a single tube with no ball or pitch, lightweight, crisp, and loud sound. It applies to various scenarios, such as life saving signals, command rescue, training passwords, sports events, etc.