ITEM NAME:2Pcs 2 x 2032 Coin Cell Battery Holder 6V Output w On/Off Switch D6L8 2Pcs 2 x 2032 Coin Cell Battery Holder 6V Output w On/Off Switch D6L8 The holder is made of plastic and snaps open and closed. You can tape it closed if you need more security than just the plastic snap. A nice extra is the on/off switch up top. 6V 2032 Coin Cell Battery is not included here.