This Klein Tools VDV526-052 LAN Scout JR Cable Tester is a must-have for anyone who needs to test Ethernet Cat 5, RJ11, and RJ45 cables. With its bright yellow and black color scheme, it's easy to spot in your toolbox. This cable tester is made by Klein Tools, a trusted brand in the industry, and is perfect for computer cable testing. It is made in China and is a type of cable tester that is suitable for use in computer cables and connectors.