Hinge Plate Template with 6" T-slot ruler Use with an Awl or Pencil to locate holes (not included) Combination plate to mark hinge cup & base plate location Installs all Liberty,Grass, Blum, Salice, Hafele and many more 35mm hinges. Copy & Paste this address at Youtube: https://youtu.be/1HWvOk9pglA You don;t need to have a jig to drill the hinge cup in the back of the doors. The spur in the center of the forstner bit keeps the bit from moving. All you need is an awl hole to start to drill your hole.