Description 1.Durable Material: The Body Of Woodworking Hole Saw Is Made Of Aluminum Alloy, The Surface Is Sandblasted, And The Drilling Socket Is Stainless Steel, Which Is Resistant To Abrasion And Greatly Prolongs The Drilling Life 2.Accurate Hole Position: Three In One Plate Hole Position Corresponds To Each Other, Simple And Fast, Aiming At Common 40Mm(Excluding Thread 32Mm) Connecting Rod Design, And Eccentric Wheel Hole Position Design, Move Up 1.5Mm, More Closely Splice 3.Easy To Use: Align The Positioning Ruler With The Marking Line And Place On The Cabinet Door, With The Red Baffle Against The Edge, And Mark The Opening Center And Two Screw Holes Respectively With The Marking Tool 4.Main Application: Hinge Woodworking Hole Saw Is Suitable For Household Cabinet Door, Cabinet, Wardrobe Hinge Installation, Accurate Positioning, Simple And Convenient Operation 5.Suitable Hinges: Woodworking Hole Saw Kit Is Suitable For 35Mm Straight Arm Or Mid Bend Hinges, Practical And Useful