FAQ: 1/ What are the functions of the portable multi-function knife? Portable multi-function knife integrates 10 functions, knife, rope cutting hook, crowbar, can opener, mobile phone holder, wire s more→tripper, cross bit, file, bottle opener, scissors, card removal needle in one, to satisfy your furniture Requirements for the use of all outdoor scenes. 2/ What is the main material of the portable multi-function knife? Main material: 30Cr13, 20Cr13, ABS, 3/ What is the size of the portable multi-function knife? Product size: 75mm x 20mm x19mm (closed) 4/How to maintain the product? 1. After use, pay attention to cleaning, especially to thoroughly wash salt, grease, dirt, etc., and