American Tool 17104 Bi-Metal Door Lock Installation Kit

BI METAL DOOR INSTALLATION KIT - Key features: Self centering jig-provides accurate hole aligment for face and edge holes. Allows for easy enlargement of smaller existing holes (common on older doors). Hole saw-deep 2-1/8 will cut completely through 1-3/4 doors. Allows for resizing of existing holes. Fold over tabs -adjust for 1-3/8 and 1-3/4 thick doors. Mounting holes-secure the jig and match the latchplate holes. 1 hole saw-cuts a straight, clean hole. Allows for resizing of existing holes.