It is convenient for daily storage of standard SIM card, Nano card, Micro card, MicroSD memory card, etc. and also protect your valuable cards from getting damaged or lost. 10 Pack SIM Card Adapter - Each Pack includes 1 Eject Pin for Phone and 3 Adapters - Nano to Micro, Nano to Standard, and Micro to Standard. (Cards are not included.) These card cases are slim, lightweight and portable, which can be put in the purse, wallet, pocket or bag, especially ideal and useful for travelling and multi sim card users. Nice gift for someone who loving travels. The SIM card adapter allows you to convert your sim card size, this is ideal if you want to use the same SIM card in a different phone or changing between a newer and an older phone that requires a different size sim card. Color: Black, 1 Year Warranty By SaiTech IT Pvt Ltd