What is this?Small-sized caution laser warning sign to indicate the danger of laser,with words "caution laser"What will I get?Size:100mm/3.9inch;Thickness: 0.2mm/0.078inch;pack of 4Is there any advantages of the product?Made of vinyl material, bright color printing, endurable and with waterproof surface, Suitable for both indoor and outdoor useHow to use it?Self-adhesive, easy to use, just peel and stickWhat should I notice?Due to the light problem, there is a slight color difference in the picture shooting
