Sumex Ultrasonic Game Whistle (Hare, Wild Boar, Deer, Deer

Produces ultrasonic sounds that keep wildlife away. Copper washer: durable copper grommets, strong and sturdy; Size: 1/2 inch (13mm) hole inner diameter, 4/5 inch outer diameter, 1/5 inch tube length (index: please avoid rain, acid rain will make it rust) Easy to Use You can easily use eyelet kits for repairs, they are useful accessories of leather, canvas, tarp, tent, awning and other fabrics. Convenient Storage Box: All eyelets and tools are placed in a transparent storage box, making it easy to find the corresponding component Note: The hole opener is sharp and should be used carefully to avoid cutting by hand. When using a hole opener, it is recommended to place a wooden board on the table to prevent sharp holes from directly touching the table