The special shape in combination with expanding glue pockets and longitudinal grooves gives the tennon a secure grip. For absolutely twist-proof connections and maximum stability. Added to this is significantly faster processing: The first tennon hole is aligned with extreme ease and routed accurately using flip stops. It immediately secures the workpieces that are to be joined so that they are exact and flush with the edge. The DOMINO system even tolerates smaller imprecisions in the other tennon holes. Tennons are 36 mm long, ideal for joining two bases to a centre panel on 19 mm thick T cupboard structures (centre panel joint).