Nite Ize S-Biner MicroLock The Nite Ize S-Biner MicroLock is the perfect size to hold and organize keys to rings or for organizing other smaller items. And now, this Lock from Nite Ize has an added twist lever, this also locks perfectly, preventing any unintended or accidental openings. Made of high quality stainless steel, the Nite Ize S-Biner MicroLock features a center lever made of durable plastic--a simple twist effectively and securely locks the gates, and keeps them that way until you twist it open again. Great for removing a single key from a ring to take on a run or ride, give to your mechanic, or leave for a friend. The Nite Ize S-Biner MicroLock is versatile, convenient, and ultra-secure.