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PrintablesJJG3D
Dual Dog/Hiking Keychain Whistle
A dual ended key chain whistle with audible and inaudible tones. The silent whistle sits at just under 19khz (see picture) and should be inaudible to most humans, while the other end aims to achieve the opposite purpose and is great for…
- Pobrania
- 419
- Polubienia
- 71
- Ocena
- 4,6