Usage guide: 1. Opener: to open cans easily with the hook. 2. Side knife: sharp blade and can cut off the ropes or peel fruit after washed. 3. Small knife: cut something. 4. Straightedge: metric scale, minimum scale is millimeters. 5. Bottle screwdriver: to open beer or drinking bottle. 6. Multi-functional wrenches: different size of wrenches. 7. Spanner wrench: this is a long hollow groove. You can squeeze any flat items with turnbuckle. 8. Saw tooth. 9. Orientation: you can use the 16 features to measure different directions accurately. 10. Hang key ring. Color: Silver or Black Note: The saw tooth of the Silver one is sharp, and the black one is not sharp. Outdoor Multi-Tool Portable Credit Card tool card outdoor knife/ Survival Card/ Emergency Knife / Fits in your wallet. Type: Assembly Tools Hardness: 56-58 Thickness: 0.2cm Weight: About 30g Size: 7 x 4.5cm