4 Pcs Self Centering Hinge Hardware Drill Bit Set 5/64 7/64 9/64 11/64 Brand new and high quality 4 different sizes suit most use Professional drilling tool pplicable to the installation of door hinge. Size: 5/64'': Hole diameter is about 2mm, Use about 2.2 - 2.8mm tapping screw 7/64'': Hole diameter is about 2.8mm,Use about 3 - 3.5mm tapping screw 9/64'': Hole diameter is about 3.5mm,Use about 4 - 4.5 mm tapping screw 11/64'': Hole diameter is about 4.5mm,Use about 5 - 5.5 mm tapping screw Packing include:4pcs/set EU Responsible Persons information: Name: PI NETWORK SARL Address:38 rue Dunois 75647 Paris CEDEX 13,75013,FR E-mail:friedlichrichter@outlook.com This merchant is committed to only offering products that comply with the General Product Safety Regulation.