1. 68mm to hinge positioning from door end 2. Works with 3mm, 4mm, 5mm, 6mm hinge offsets 3. All aluminum products, beautiful and durable 4. 35MM hinge hole, small drill bit positioning hole 5. Equipped with a limit ring, the drilling depth can be adjusted 6. Equipped with universal clamp, stable and strong clamping 7. The drill sleeve adopts precision guide drill sleeve, which makes the hole drilling more and simple Hole Opener Size: 35MM Drill Bit: 2MM Clamping board thickness: 15-25MM Hinge offsets: 3/4/5/6MM Colour:black+red :Metal Package Contents: 1X Hinge Boring Hole Drill Guide Body 2X Drilling Guide Locator 1X 35mm Hole Opener 1X 2mm Drill Bit 2X Wrench 1X 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.