Made of , flexible and durable to use. Just put it trumpet, it will reduce volume in trumpet practice immediately. Will not scratch your trumpet. It will provide convenience in dampening trumpet practice volume without affecting the tone. Features -Material: ABS -Size: About 9.76X6.20X2.80cm/3.84X2.44X1.10inch -Decrease the sound level to a minimum while maintaining sound quality, will not affect the practice quality. -Protect your instruments from scratch and wear. Perfect trumpet mute replacement for all beginners. -Adopt premium ABS materials, which makes it durable and wear resistant for long-term use. -Professional and practical design with beautiful appearance, making it easy to install and use. -Effectively reduce the practice volume, great for beginner. It will serve you well for a long period. Package list: 1 x trumpet mute