4 Way Drill Chuck Key For Changing Drill Bits. This is a new 4 way drill chuck key. Great for changing drill bits. Fits standard size drills. From end to end it is approximately 3" (76 mm) long and approximately 1/4" (6 mm) thick in the center. We work hard to update our descriptions and pictures of our merchandise. As part of a process of ongoing innovation by our suppliers, newer versions of the item shown may be shipped before we are able to complete an update. As a result there may be a slight variation in color and design.