The wolfcraft reaming aid is the first safe standard solution for clean and centered enlargement of existing drill holes using a hole saw. This clever innovation consists of a high-quality conical plastic cylinder that you can easily screw into the existing drill hole using the integrated thread. In the center of the reaming aid is a steel sleeve that accommodates centering drills with a diameter of 6-8 mm, ensuring the hole saw is guided securely. The centered alignment with the existing hole is also guaranteed with the reaming aid. This allows you to maintain a consistent hole pattern during serial drilling, for example, when upgrading halogen ceiling spots to a larger LED system. With the included screwing aid, you can tighten the fit in the drill hole once more, ensuring that the reaming aid is firmly fixed in place. Simply position the hole saw, drill, and finally remove the reaming aid with the drill core. You can also work overhead confidently with the reaming aid.