The New 6-in-1 Sim Card Adapter kit now comes with a Nail File and a Storage Box so the small pieces of sim adapters and sim pin will not be lost. You can easily store them secured and tight in the storage box and get them in a snap! The Nail File can be used to smoothen out the edges of the sim card for a proper fit. Furthermore the Simcard adapter is very easy to use allowing you to switch between cellphones tablets and other devices effortlessly. This means that you can use this 6 in 1 sim card adapter with your Nano Sim Card or Micro Sim Card when switching your Sim Cards from newer to older mobile devices. Making this Sim Adapter the perfect accessory to allow you to use your Sim Card in an older phone with an ideal fitting.