Double Layer Design: The upper layer of the electrical tester case is compatible with klein tools ET310 AC circuit breaker finder, outlet repair tool kit and RT250 GFCI receptacle tester. The bottom layer is compatible with klein tools electrical voltage test kit and MM400/MM300/MM325/MM200/ET140/MM720 digital multimeter and Klein Tools/KAIWEETS/AstroAI/Fluke Digital Clamp Meter High-quality Material: The storage case is made of high quality EVA material, which is more durable, stronger, shockproof and waterproof than soft bags on the market. Ensure a secure & long-lasting usage everyday Six Elastic Bands: Carrying case compatible with Klein tools ET310 AC circuit breaker finder is designed with 6 highly elastic bands of different sizes, and the Velcro closure can be flexibly adjusted to fit tools of different sizes. The design of the elastic band can hold the tools firmly, reduce friction and collision, prevent scratches or deformation of the tools Function: Storage & Protective. Preventing any damages or scratches caused by accidentally. Protect the device in good condition when go out Case Size: 10.6x8.9x4.3 inch. The portable circuit breaker organizer case is Compact and lightweight, high quality zippers. Easy to carry and keep. Case Only (Devices and accessories are not included)