This mini-scoping retriever can save you enormous time trying to hunt for that wire inside the wall. The retriever is approximately 5" long collapsed and easily can fit inside your shirt pocket with its handy pocket clip. The retriever extends out to 18" and has a hook at the end that will fit through a 1 4" hole. For the Professional Installer this is one of those tools, "when you need it, you really need it"LSD53310. 53310. Labor Saving Devices LABOR SAVING DEVICES 53-310 LBS Mini Pocket Retriever.