Keyring Micro-Tools are made from 420 stainless steel, and designed for a variety of tasks. Perfect for anyone on the go, and TSA -compliant for safe travel. Size: 2 1/4" x 1 1/4 Materials: 420 Stainless steel. 8 Functions: bottle opener, phone holder, phillips screwdriver, flat screwdriver, 4 different hex wrenches. Made in China.