Welcome to our store! 1, MAIN PURPOSE: These RC airplane hinges are designed to effectively connect fixed wings and ailerons, offering convenience and practicality. 2, PLASTIC MATERIAL: Crafted from excellent plastic, these hinges boast good toughness, corrosion resistance, and oxidation resistance. 3, REASONABLE HOLE DESIGN: With fine workmanship, these plastic hinges feature precisely sized openings for effective control of fixed-wing flight. 4, LIGHTWEIGHT: These plastic hinges are lightweight, ensuring they won't impact the operation of your RC airplane model after installation. 5, 40 PCS IN 1 SET: Includes 40 RC airplane hinges, small and lightweight, providing ample quantity for easy installation and replacement. Item Type: RC Airplane Hinges Material: Plastic Application: Suitable for connecting ailerons on fixed-wing airplane models and RC KT airplanes. Includes: 40 x RC Airplane Hinges