Size: 6.85 x 4.45 x 0.2 cm, similar to the size of a bank card. Perfect to keep in your wallet and pocket, easy to carry. It is made of high quality stainless steel, durable and rustproof, not easy to tear, for long time use. It is a tool essential that could save your life in emergency situations. It can be used as a bottle opener, knife, ruler, can opener, wrench, hex key, etc. Meets your needs in the field, efficient and practical in all situations. Ideal for emergency packs, emergency kits, military operations, recovery kits and survival.