Top critical review
They work but it takes work to make them work. New design lacks clamp ring for stripped wire.
Reviewed in the United States on June 20, 2019
Based on the instructions the item has changed over time, but the instructions have not been updated. The instructions mention putting the stripped section of wire under a "core ring" and the un-stripped portion under the insulation wings.
The problem is there is no "core ring". There are only two insulation wings at the very end of the clamp making crimping both the un-stripped portion and the stripped portion difficult. The "core ring" seems to have been left out of the new version of these clamps.