Ruler Outdoor 3.6" Multi-function Card Knife Credit Card Companion with 11 Tools 2 Colors (Gray 2 Pcs) Stainless steel multi card tool, featuring 11 tools all in 1 card, including Beer card bottle opener Great size to fit in your wallet or pocket measuring: 2.7" x 1.8" Beer credit card bottle opener and multi tool. Has a small hole for keychain ring Everyone Need one of this card in your wallet.