Hacker's Tool is a term used to describe the tools used by hackers to gain access to computer systems. Two of the most common tools are MACHETE and AXE, both of which have seven and three letters respectively. MACHETE is a type of large knife used for hacking into computer systems, while AXE is a type of software used to break into networks. Both of these tools are essential for hackers to gain access to computer systems and networks.