This Robart Manufacturing RC Airplane 1/8 Hinge Point Hinges 301 ROB301 is a great addition for aerobatic and 3D planes, as well as biplanes. It is compatible with SIG, Hangar 9, Robart, Great Planes brands and is made in the United States. The hinge point is designed for 1:18, 1:16, 1:15, 1:4, 1:14, 1:5, 1:6, 1:12, 1:8, and 1:10 scales. It is suitable for use with gasoline, electric, nitro & glow fuel, jet fuel/kerosene, and is suitable for ages 8 and up. The pin hinge point is easy to install and provides a reliable and durable connection. This product is perfect for those who enjoy building and flying RC planes. Some packaging has some fading but all factory sealed.