HILTI DD100 CORE DRILL WATER ADAPTOR. This fit to your Hilti dd100, dd100m. And allows you to used water with it. Ideal if you have it in a drill stand. Slots in your dd100 and the other end either use hilti core bits or you would need a adaptor in the end to use with threaded connection core bits. These are as rare as hens teeth now. Vat invoice sent with goods.