MATERIALS: All metal cabinet hinge clamps made of excellent aluminum alloy are more and accurate than plastic clamps, and to EASY DRILLING: The all metal concealed hinge jig has built in double bearings to provide continuous hinge drilling for greater ease, very convenient INCISIVE AND ACCURATE: 35mm carbide bits are strong and incisive for mounting cabinet door hinges. Concealed cabinet hinge jig wood hole puncher positioner help you drill holes as accurately and quickly as a drill PRESET DEPTH: Cabinet hardware fixture provide quick cabinet hinge hole depth setting without any measurement; 35mm concealed hinge jig provide 0‑0.6in drilling depth QUICK CLAMP DESIGN: You can clamp and fix the concealed hinge jig on the workpiece easier and fast, save a lot of time and make woodworking easier Please note:Slight color difference or difference in kind, does not affect the use, please do not mind, thank you! Material: Aluminum alloy colour: black Package Contents: 1 x 35mm Concealed Hinge Jig Kit Only the above package content, other products are not included. Note: Light reflection 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.