Material: The Replacement Screw Cap is made of Lightweight Aluminum, Strong and Durable. A long lasting Replacement Part that is craftet with laser precision and care. Easy to Use: Battery Caps can get lost. It is always good to have a spare or to replace your lost one with a brand new Battery Holder. Simply place a new battery into your Wireless Bluetooth Keyboard or Trackpad and screw the Replacement Lid on top of it. Compatible with Apple iMac G6 Wireless Bluetooth Keyboard Model A1314, A1644 and Magic Trackpad Model A1339 Product provided by MMOBIEL - We always try our best to exceed your expectations at every turn. Join the ever growing list of satisfied customers and discover the difference with MMOBIEL.