A Specially made Kit with all the drill bits and router bit you need to hang a door Kit You may have to buy a metric collet to suit the router you are using. the router bit has an 8mm shank. Contains. 1 x 12mm Bormax 2.0 Metric Forstner Bit, 1622012 1 x 16mm Bormax 2.0 Metric Forstner Bit, 1622016 1 x 18mm Bormax 2.0 Metric Forstner Bit, 1622018 1 x 25mm Bormax 2.0 Metric Forstner Bit, 1622025 1 x 2.5mm Bradpoint Drill bit, 1594025 1 x 3.5mm Bradpoint Drill bit, 1594035 1 x 8mm Bradpoint Drill bit, 1594008 1 x 12mm TCT Router bit 8mm Shank, 3167812 1 x 2mm Self centring Bit, 3582020