Manufactured with zinc alloy material, specially designed to compatible with electric keyboards, digital pianos, guitars, home theatres, speakers, bass amplifiers, , mixers, etc. Compact and lightweight, headphone jack adapter is easy to install and easy to store when not in use. Features -Color:Silver -Material: zinc alloy - Size: 5.00X1.00X1.00cm/1.97X0.39X0.39in - Headphone adapters are versatile, can use a variety of different settings, such as home, office or . - Headphone adapter can make a difference in your listening experience, help easy plugging and unplugging for using. - Headphone jack adapter is small, easy to store, can keep your bag or , convenient to use anywhere and anytime. - Stereo jack adapters let your favorite headphones or other devices fit for most pro audio such as an keyboard, piano and more. - Headphone jack adapter, a great way to extend the life of your headphones, as it allows you to use them with a wider range of devices. Package list: 4 x headphone jack adapters