my mate gave me one of these a couple of months ago in return for some karndean I had left over on a job http://www.strongtie.com/products/quikd ... ?source=qd and used it today for first time screwing 9mm ply to access panels and was very impressed can fly through the screwing and no kneeling down required, but shortest screws I've found are inch and quarter long so won't be brave enough to use it to fix py in a house gets expensive keep calling a plumber out