ITEM NAME:3 Size Self Centering Hinge Cabinet Door Hardware Wood Drill Bit Set 7/64 9 A9S7 3 Size Self Centering Hinge Cabinet Door Hardware Wood Drill Bit Set 7/64 9 A9S7 These self centering drill bits put hinges right where they should be in the center for carpenters, cabinet, furniture makers and other wood working trades Easy to use and install Positioning accuracy, will not shift, the chips will automatic discharge from the hole on either side of the top of the drill, not stuck drill Professional drilling tool,Applicable to the installation of door hinge Material: HSS color: silver Size: 7/64 inch, 9/64 inch, 11/64 inch 7/64 inch: hole diameter about 2.8mm, using 3-3.5mm self-tapping screws. 9/64 inch: hole diameter about 3.5mm, using 4-4.5mm self-tapping screws. 11/64 inch: hole diameter about 4.5mm, using 5-5.5mm self-tapping screws. package included: 1 set x 3 doors and hinges hinge bit Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.