Fuse pullers are only to be ued when the associated circuit has been de-energized. For use 13/32" to 13/16" diameter. 1A Through 60A Dimensions: " (L) x " (W) x " (H) For use 13/32" to 13/16" diameter Fuse pullers are only to be ued when the associated circuit has been de-energized Carded.