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 11/4" Material: 420 Stainless steel. 10 Functions: 6 different hex wrenches, philips screwdriver, flat screwdriver, bottle opener, key hole. Made in China.