7pcs Self Centering Door Window Hinge Set Twist Wood Drill Bit Hole Puncher

Description 7pcs Self Centering Door Window Hinge Set Twist Wood Drill Bit Hole Puncher Specification Material Brass shell high speed steel coreSizes 5 64 7 64 9 64 11 64 5mm 13 64 1 4Hole Size 5 64 The hole diameter is approximately 2mm using a 2 2 2 8mm tapping screw7 64 The diameter of the opening is approximately 2 8mm and a 3 3 5mm tapping screw is used9 64 diameter of opening is approximately 3 5mm use 4 4 5mm self tapping screws11 64 diameter of opening is approximately 4 5mm use 5 5 5mm self tapping screws5mm opening diameter is 5mm use 5 5 6mm self tapping screws13 64 The diameter of the hole is approximately 5 2mm using a 6 6 5mm tapping screw1 4 opening diameter of about 6 35mm using 7 7 5mm tapping screwsQuantity 7pcs set Features Positioning accuracy will not shift wood chips will be automatically discharged from the hole on both sides of the top of the drill bit will not block the drill bit The door and window hinges are fixed to the doors and windows by screws This product is used to open the holes in the hinge screw holes of the doors and windows The drill sleeve can hold the position well and ensure the precision of drilling which is a good tool for improving the drilling efficiency How to use When opening the hole please adjust according to the hardness of the wood If the wood is soft you can choose the smaller one If the wood is hard you can choose the corresponding or bigger one Package Included 1 x Drill Bit Set 7p