The Souber DBB Small Bore Package includes accessories available for the DBB Door Lock Mortiser, packaged together for your convenience. Used with the DBB Door Lock Morticer, the DBB Small Bore Package includes one DBB Small Bore Housing, one DBB Small Bore Shaft and two DBB Carbide Tipped Wood (Small Bore) Cutters: 13.2mm and 14.6mm. This package can be stored inside the existing DBB Door Lock Mortiser case.