Can Be Used With Standard 35mm Concealed Hinges. Hinge Hole Cutter:bore Diameter Is 35mm. Special Removeable Depth Stop Design Makes Drill Easier Concealed Hinge Boring Jig:features A V-locator That Works Off Of A Center Reference Line And Quickly Locates Drill Center Points For All Brands Of Hinges And Mounting Plates. The Concealed Hinge Jig Allows You To Drill Cup Holes For Concealed Cabinet Door Hinges Hole Position Is Accurate,drill Hinge Holes Conveniently And Fast.makes Cabinet Door Installation Easy Colour: Blue + Silver Material:alloy + Plastic Package Contents: 1 X Forstner Bit 1 X Mounting Plates 1 X Wrench 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.