Do not put the drill hole cutter through the red positioning plate directly as it is only used to draw the installation position of the hinge hole to locate the hole. After drawing, remove the positioning plate and drilling. The cutter fit in the plastic template hole)hinge drill is made of premium carbide with the characteristic of high hardness, non-deformation and anti- corrosion. And the hinge drill guide made of ABS plastic, durable, lightweight and portable.35mm forstner drill bit adopts a -positioned tip design to make cutting sharper. The drill bit with a detachable depth limiting baffle and a clear scale makes drilling easier and more efficient. Tip: The drill chuck should clamp the , so that the jig bit will not .Hole diameter of red position plate: 35mm/1.4inch. The hinge drill guide can help you draw the perfect hinge hole quickly. And the "V"-locator that works off of a reference and quickly locates drill points so that the hole will not shift. Make cabinet door installation easy and .The concealed hinge kit is working efficiently for timber, plywood, veneer work, great for cabinet, hinge, furniture and mounting plates or other DIY projects. Great for beginners, you can find the of the hinge and mounting plate quickly.Material: Plastic + Alloycolour: As shownPackage Contents:1 set x 35mm forstner bit(3 Pcs)Only the above package content, other 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.