6 pcs Ultrasonic Car Warning Whistles, Warning Wild Animals Deer, Wind Driven Sounding Deterrent Alarm Product introduction: Material: The equipment is made of high quality plastic. It can withstand extreme outdoor temperatures and the sticker will not damage the bumper. Practical design: humane animal design. Use natural wind, ultrasound and physical phenomena to control various animals. Protect animals from harm. At the same time, it does not disturb people. Easy to install: just tear off the adhesive on the back of the alarm and stick it on the front bumper or grille of the vehicle. Easy to install, no drilling required. It can be installed on all types of vehicles. Safe Insect Repellent: Repels all animals that react to high-frequency sound. For example, deer, dogs and cats can protect animals from harm. Reduce the risk of accidents. Package includes: 6 pcs Ultrasonic Car Whistle Warning NOTE: 1. Please allow 0.5-1 inch difference due to manual measurement. (1 inch = 2.54 cm) 2. The color of the actual items may be slightly different from the listing images due to different computer screens, thanks for your understanding.