Misc Survival Card. Measures 2 3/4 x 1 3/4". Stainless construction. Can be used as can opener, knife edge, screwdriver, ruler, cap lifter, wrench, butterfly wrench and saw blade. Lanyard hole. Keychain. Black plastic sleeve." Measures 2 3/4" x 1 3/4". Stainless construction. Can be used as can opener, knife edge, screwdriver, ruler, cap lifter, wrench, butterfly wrench and saw blade. Lanyard hole. Keychain. Black plastic sleeve.