Pocket Size: The multi-tool weighing only 2.3 ounces and measuring a little over 2" long is very easy to carry and can be used as a gift or for hanging. It comes with a key ring. It can be hung on a key or on a backpack. The key ring is designed to prevent the possibility of loss.^ Snowflake 18-in-1 Multi-Tool: Flathead Screwdriver & Box Cutter, Rope Cutter, Bottle Opener, Key Hole, Phillips Screwdriver: Metric (millimeters) - 3; SAE (inch) - 1/8, Allen Wrench: Metric (millimeters) - 3-4-5-6-8-9; SAE (inch) - 1/8-5/32-3/16-1/4-11/32-6/16, Outer Hex Wrench: Metric (millimeters) - 7-8-9-10-11-13; SAE (inch) - 9/32-11/32-6/16-3/8-7/16-1/2^ Special Snowflake Shape Design: Unique snowflake shape design allows us to creatively use nature's perfect shape to combine with functionality and design in our compact multi-tool.^ Multi Use: This 18 in 1 snow tool can be used to open the beer bottle, turn the screw, fix the snowboard, bicycle, toys. Also can be used for outdoor activities, such as camping, snowboarding, rescue and anything that can be used.