The Creative Hobbies E240 Spring Loaded Plunger Style On/Off Assembly is designed for 18 note wind-up music box movements, allowing you to control the playback of music with ease. When the lever is pressed down, simulating a closed box lid, the music will stop playing. Installing the plunger style on/off assembly is simple - just remove one screw and use the included parts to attach the lever to your music box movement. The gold color metal lever measures 2.4 inches long, providing an elegant touch to your project. This versatile on/off assembly is perfect for use with boxes, drawers, or any creative project where you want to control the music. Included with your purchase are step-by-step instructions for assembly and use, making it a breeze to incorporate this mechanism into your project. Enhance your music box or project with the Creative Hobbies E240 Spring Loaded Plunger Style On/Off Assembly.