Author: David Tootill (Seattle, ..
Didn't know this product existed, but it works perfectly for screws with limited room. It needs less than an inch of clearance above the screw, with the screwdriver angled out up to 90 degrees (selected with a sleeve on the head). A ratchet in the screwdriver allows the screw to be tightened or loosened with no loss of leverage or control due to the angle of approach. There is a wide selection of bits, including slot, Phillips and even Canadian Robertson (square). I recommend this ingenious product for anyone that uses a screwdriver.