ITEM NAME:80cm Aviation Windsock Rip-stop Wind Measurement Sock Bag + Reflective Belt B2B8 80cm Aviation Windsock Rip-stop Wind Measurement Sock Bag + Reflective Belt B2B8 High strength windsock, nylon cloth material, rope made of high quality reflective tape. Easy to install, colorful, high flexibility, long life and other advantages. Dip galvanized hook, durable, not easy to fall off. Placed outdoors, to indicate wind direction. Windsock use to observe meteorological wind, with the installation convenient, visible rate, long life, etc.. Application: Widely used in meteorology, chemical industry, environmental protection, agriculture, oil exploration, oil drilling and other industries. Specifications: Length: 80cm 80cm: Air inlet: 20cm ; Air outlet: 11cm Color: Orange & Grey Material: taffeta Package included: 1 x Windsock Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm.