Drill Doctor DA02105PF Left Handed Reverse Twist 3/32-Inch to 1/2-Inch Chuck for the Drill Doctor Models DD500X and DD750X only Review Posted on March 20, 2019 by ControlSprite This fits your . Make sure this fits by entering your model number. Holds left-handed (reverse twist) 3/32″ to 1/2″ drill bits Fits Models DD500X and DD750X only › See more product details