Type: Center Drill Bit DIY Supplies: Woodworking twist drill bit: screw extractor countersink drill bit: step drill drills: extractor the fish Jig is an economical alternative to expensive drilling devices and confusing jigs. Tool quickly locates drill center points all brands of hinges and mounting plates. Features a "V"-locator that works off of a center reference line. Jig can be adjusted changes in door edge to cup alignment. Name: Hinged hole locator Function: light and portable, easy to operate;sharp and durable, continuous knife, Suitable positioning and installation of furniture door hinges Instructions: 1. Determine the position of the hinge cup, the short plate is facing upward, the screw is fastened on the edge of the wooden board, and the hinge cup hole is drilled; 2. Draw a corresponding center line on the other board, the short board faces downward, the middle line is aligned with the inverted triangle, and the hinge positioning hole is drilled; 3. Install the hinges. colour:blue Material:ABS+ metal size:Hinge Locator: 77*66mm Hole opener: 35mm Package Contents: 1* hinge positioner 1* hole opener 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.