Product review (2 stars): extension rods melt/break with drill
Not an awful product, but I used this with a regular dewalt drill, and even with the drill capped at half speed, the plastic snapped on the rod, and got hot enough that it bent in half after about 30 seconds of use.  Still have 3 working extension rods, so i guess it will last me a year or two in total, just a lot of money for something that falls apart on use.