Promate cellukit universal mobile sim & memory cards storage box with sim removal pin. designed for frequent travelers, cellukit is a safe and secure storage tool for mobile sim cards and microsd cards, and it even comes with an included sim card removal tool. it features a super sticky interior that’s made of 3m grip pad, which will keep all items safe from spilling out even when its drawer has been opened. the drawer is powered by a spring mechanism and will slide open and closed only when pressure is applied. it’s smaller than a credit card, which makes it the perfect accessory for anyone who is about to travel.