Additional Bass Drum Head - This head is manufactured as a replacement or accessory for VivaRhythm Pop Off Bass Drum Plastic Head - The pre-tuned head with a nylon strap for easy removal delivers sharp and cutting sounds Used as a Drum - This replacement part can also be held by hand and used as a hand drum Suitable Size - With a diameter of 30.48 cm, this head is suitable for 12-inch bass drums 3 Sizes - This head comes in 3 different sizes, with a diameter of 12 inches, this is the medium-sized one