Quantity: - 2pc Extension Hooks - 5pc Extension Hooks - 10pc Extension Hooks - 20pc Extension Hooks - 50pc Extension Hooks - 100pc Extension Hooks 100% brand new and high quality Make the mask tighter but comfortable - Our adjustable Extension Hooks for Masks are super easy to use, they are adjustable to fit all sizes of face, and will protect you better by keeping the mask close to your face, what’s more, they are so soft that will not hurt your skin and relieve the pressure from the masks, your ears will no longer be hurt by the masks, and you will feel comfortable even after long time wearing. NOTICE: 1. Please allow 1-3 cm tolerance due to manual measurement. 2. Different displays show the same picture may be slightly differences. Thx for understanding,hope you a happy life.