Self Centering Door Cabinet Hinge Drill Bits - 7pcs HSS 1/4 Self Centering Hex Shank Pre-Cut Bits

Precision Self-Centering Drill Bit Self-centering precision centering bits are essential for pilot holes in hinges, handles, drawer slides and other parts, the cone that surrounds the drill ensures that the pilot hole is centered relative when milling the fixing hole, drill a pilot hole Sharp 135 degree oblique edge of the bit head, make the hinge drill more quickly drilled in the position of the hinge holes. the guide that surrounds the drill bit is pushed by a spring to keep it in contact with the countersink the part to be repaired. Wood chips are automatically discharged Sawdust automatically drains from both sides of the holes, without a stuck drill, you do not need to remove wood chips, effectively increasing your work Easy to use and install Different hardness wood, need different centering drill, just disassemble the screw and replace the drill. Professional tutorials on using vedio will be provided. Product description br Size 4pcs selfcentering br Who is it designed for br Mr. br - Professionals or amateurs as carpenters, mechanics, cabinet makers, furniture makers and other craftsmen working with wood. br - These self-centering pre-punch tips are ideal for pre-drilling holes for fasteners, including hinges where it is essential to have a perfectly centered pre-hole. br - The 4 points are of different sizes, to adapt to all models, from the largest to the smallest. br Single value br 1. Provide professional vedio use tutorials, please br 2. Long-term durability brass shell, high speed steel drill bit, appearance electroplating, 14 months br 3. Better perforation performance positioning accuracy, will not move, the chips will automatically discharge from the hole on each side of the of the drill, and will not cause problems with wood chip jamming br Common size instructions br The 4 most common hinge screw sizes are 5/64 , 7/64 , 9/64 , 11/64 . br 5/64 The hole diameter is about 2mm, Use about 2.2 - 2.8mm sheet metal screws br 7/64 The hole diameter is about 2.8mm, Use about 3 - 3.5mm sheet metal screws br 9/64 The hole diameter is about 3.5mm, Use about 4 - 4.5mm sheet metal screws br 11/64 The hole diameter is about 4.5mm, Use about 5 - 5.5mm sheet metal screws br What's inside the package br 4pcs Hinge Drill Bit br Note br Please adjust the adjustments according to the hardness of the wood when opening, if the wood is soft, you can choose a smaller size, if hardwood, choose matching or larger size.