Description:When opening the hole, please adjust it according to the hardness of the wood. If the wood is soft, you can choose a smaller one. If the wood is hard, you can choose a corresponding one or a larger one.These drill bits are easy to locate and will not shift. Sawdust will be automatically discharged from the holes on both sides of the drill bit, and the drill bit will not be stuck. It is a must for professionals and DIY.Made of high quality alloy material, the drill bits are anti-rust and sturdy.There are two styles for your choice, including 9Pcs set and 17Pcs set.The drill bits are suitable for woodworking.Item Name: Woodworking Hinge Drill BitMaterial: AlloySize Details: Hole Opening Size:5/64": Hole Opening Diameter: 2mm/0.08", Applicable Screw Size: 2.2-2.8mm/0.09"-0.11" (Approx.)7/64'': Hole Opening Diameter: 2.8mm/0.11", Applicable Screw Size: 3-3.5mm/0.12"-0.14" (Approx.)9/64'': Hole Opening Diameter: 3.5mm/0.15", Applicable Screw Size: 4-4.5mm/0.16"-0.18"(Approx.)11/64'': Hole Opening Diameter: 4.5mm/0.18", Applicable Screw Size: 5-5.5mm/0.19"-0.21"(Approx.)5mm: Hole Opening Diameter: 5mm/0.19", Applicable Screw Size: 5.5-6mm/0.21"-0.24"(Approx.)13/64'': Hole Opening Diameter: 5.1mm//0.2", Applicable Screw Size: 5.6-6.1mm/0.22"-0.24"(Approx.)1/4'': Hole Opening Diameter: 6.3mm/0.25", Applicable Screw Size: 6.8-7.3mm/0.27"-0.29"(Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:8 x Hinge Drill Bits (5/64'', 7/64'', 9/64'', 9/64'',11/64'', 5mm,13/64'',1/4'')1 x Spanneror8 x Hinge Drill Bits (5/64'', 7/64'', 9/64'', 9/64'',11/64'', 5mm,13/64'',1/4'')8 x Twist Drill Bits (5/64'', 7/64'', 9/64'', 9/64'',11/64'', 5mm,13/64'',1/4'')1 x Spanner