[Firm and Stable]The portable case is compatible with for ET310 AC circuit breaker detector. It is designed with 6 highly elastic bands of different sizes, and the Buckle closure can be flexibly adjusted to accommodate tools of different sizes. The design of the elastic band can firmly fix the tools, reduce friction and collision, and prevent the tools from being scratched or deformed. [Large Capacity]This circuit tester storage box is equipped with two large zippered mesh pockets and a front pocket to accommodate socket repair tool kits, wires, batteries and other small items, etc., which is enough to meet your daily work storage needs. [All-round protection]The outer layer of the voltage detection case is made of high-quality polyester, which is waterproof, scratch- and tear-. It is filled with thickened shock-absorbing cotton all around, and the lining is soft and comfortable, providing full protection for your tools from scratches, collisions and moisture. [Portable and Compact]The portable circuit breaker storage box is compact and , and the sturdy and comfortable handle allows you to carry the tools easily. (Note: Only the socket test tool travel case, no tools and accessories are included.) Colour:Black Material:Polyester Package Contents: 1 x Electrical Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.