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: 10.75" (L) x 3.25" (W) x 1.00" (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.