??The detection is accurate and sensitive :The conductive contact part of the test probe is a copper pin ,which has good conductivity ,and the in the test is more sensitive ,accurate and super fordurable ??Insulation :The handle of the test pen is made of insulating material ,which is tough enough to prevent exercise and is safer to use ??Size and specifications :total length :79mm ,worktable pen length :20mm ,worktable pen size :0 . 7mm ,aperture :4mm ,current :1A ,voltage :30V 60V ?? Probe Purpose :This multimeter probe can be used in line power meters ,and it is also suitable for measuring small IC pins ,LED lights and components .It has strong compatibility and is convenient and quick to use ??Warm service :We strive to provide you with the best quality products and the best customer experience .Your recognition of our products is our best encouragement .If you are not completely satisfied ,please feel to contact us, Manufacturer: Raguso