K-14 is a Safe Buster with Standard Collar, which can be used to drill through hardplate. Penetrates most hardplate in minutes instead of hours. Drill Motor Not Included. Versatile safe drilling rig that uses over 12 types of drill motors such as: Bosch, AEG, etc. The most affordable in its class. An adapter ring is used to mount your drill motor to the K-14. This adapter ring mounts to the front end of your drill housing, just behind the chuck. The adapter ring that is provided with the K-14, is designed to work with a housing that has a diameter of approximately 1.69" to 1.72".