Who It Is Design for:
Mr. DIY
Professionals or amateurs as carpenters, and mechanics, cabinet, furniture makers and other wood working trades.
This Self Centering Pre-Drill Bit is a must tool If you are installing hinges, knobs,latches,locks or pulls,or others that needs screws on center
Unique value:
Often give away free tool products (because we clean stock),pls contact us
Provide professional vedio use tutorials,pls contact us
Warranty 14 months,a warranty system, to provide repair parts.
Professional sellers, and professional guidance, have more tool accessories to choose
Long-term Durability: Brass shell, High-speed steel drill,Appearance electroplating,Warranty 14 months
Best Punch Performance: Positioning accuracy,will not shift,the chips will automatic discharge from the hole on either side of the top of the drill,not have trouble with wood-chip jamming
Common size instructions:
The 4 most common hinge-screw sizes are 5/64", 7/64 ", 9/64", 11/64 ".
5/64'':Hole diameter is about 2 mm,Use about 2.2 - 2.8 mm tapping screw
7/64'':Hole diameter is about 2.8 mm,Use about 3 - 3.5 mm 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
What Is Inside the Package:
4pcs Self-Centering Hinge predrill Bits
Note:
"Please appropriate adjustments according to the hardness of wood when opening, if wood is soft,you can choose a smaller size, if hard wood,choose corresponding or a bigger size. "