B3768 Converts your electric drill into a professional screw gun and automatically countersinks screws to the perfect depth. This screw setter is equipped and loaded with an anti drywall tear-out mechanism along with a magnet that securely holds screws in place making it ideal for screwing in drywall and subfloors. Features: Converts your electric drill into a professional screw gun Automatically countersinks screws to the perfect depth Loaded with an anti Drywall tear-out mechanism Magnet securely holds screws securely in place Ideal for screwing in drywall and subfloors Brand new product in manufacturers packaging!