Hey RC enthusiasts, these SPARKHOBBY folding propellers are exactly what you need for your electric model gliders! You get 4 pieces total (that's 2 pairs of 9x5 props) that are perfect for various RC airplanes. Made from durable nylon material, these black folding paddles range from 7 to 11 inches in diameter, giving you plenty of options for different setups. The folding design is super convenient for storage and transport, and they work great with various motor models. Since they're recommended for ages 14+, they're perfect for both beginners and experienced hobbyists. Whether you're building a new RC plane from scratch or just need to replace some worn-out props, these deliver reliable performance without breaking the bank. The quality construction means they can handle regular use while maintaining their shape and efficiency. If you're into RC aviation and want affordable, dependable propellers that get the job done, these are definitely worth checking out. They're compatible with multiple aircraft types and make maintenance and upgrades so much easier. Seriously, having spare props on hand is always smart - saves you from being grounded when you accidentally break one during those not-so-perfect landings!