The special shape in combination with sexpanding glue pockets and longitudinal grooves gives the dowels a secure hold. For absolutely twist-proof connections and maximum stability. And with significantly faster processing: the first dowel hole is very easily aligned and routed for a precise fit with the help of stop flaps. It immediately fixes the workpieces to be joined exactly and flush with the edge. The DOMINO system also tolerates minor inaccuracies in the further dowel holes.