USE: This is a bamboo top section for outdoor use stainless steel whistle FEATURE: In an emergency, it can pick up a small sound but produce a normal whistling volume. HIGH QUALITY STAINLESS STEEL METAL: Production of stainless steel CNC metal finishes. APPLICATIONS: Outdoor survival, self-defense, rescue, EDC drive collection, etc. USE: This is a stainless steel outdoor use bamboo top section whistle Features: slbrille This is a stainless steel outdoor use bamboo top section. Survival supplies in harsh environments. In an emergency, it is possible to take a small sound but make a normal whistle volume. Stainless steel CNC metal finishing production. Outdoor survival, self-defense, rescue, EDC player collection, etc. Specification: Color: silver Material: 304 stainless steel Total length: approx. 54mm Lie of package: 1 * whistle