The drilling aid from wolfcraft is the first safe standard solution for the clean and centred expansion of existing drill holes with a hole saw. This clever innovation consists of a high-quality tapered plastic cylinder that you simply screw into the existing hole using the integrated thread. In the centre of the drilling aid is a steel bushing that accepts centring drills with Ø 6-8 mm and thus guides the hole saw securely. The centring aid also guarantees centred alignment with the existing hole. This allows you to maintain a uniform hole pattern for series drilling, e.g. when converting halogen ceiling spots to a larger LED system. Use the included insertion aid to retighten the seat in the drill hole so that the drilling aid is firmly fixed in the drill hole. Simply insert the hole saw, drill and then remove the drilling aid with the drill core. You can also use the drilling aid for overhead employees.