Description of MAGBIT 782 18 0716QC 16 Inch 18 Inch Extension
Quick change shank. Spring loaded for one handed loading and unloading of quick change bits. Has quick change shank to fit quick change chucks. Allows safer use of tool at extended distance.
They feel quite strong. I found that for every bit I used, I had to go deeper into the serrated part of the quick release. If I hadn't done that, the bit wouldn't have engaged properly. A small flaw, but I can live with that for the price.