ASTRO Mini Portable Opening Folding Knife & Credit Card Companion Multi-function Key Chain Tool/Credit Card Tool (MINI-Black) How size inside Wrench Bottle opener. Design portable easy to carry for daily use mini tool high quality. Keychain beer opener EDC multi-functional pocket survival tool. Great for: Repairmen, Mechanics, Carpenters, Hobbyists, Campers. Mini size easy to carry.