Do not insert the drill hole cutter directly through the red positioning plate, as it is intended only for marking the hinge hole installation position to locate the center. After marking, remove the positioning plate before drilling. The cutter fits into the plastic template hole. The hinge drill is made of premium carbide, offering high hardness, resistance to deformation, and corrosion resistance. The hinge drill guide is made of ABS plastic—durable and portable. The 35 mm Forstner drill bit features a center-positioned tip for precise cutting. It includes a detachable depth-limiting stop and a clear scale for easier, more efficient drilling. Tip: Secure the hole saw firmly in the drill chuck to prevent bit drift. Hole diameter of the red positioning plate: 35 mm (1.4 inches). The hinge drill guide enables quick and accurate marking of concealed hinge holes. The “V”-shaped locator aligns with a center reference line to quickly identify drill center points and prevent hole misalignment. Simplifies cabinet door installation with precision. This concealed hinge kit works efficiently on wood, plywood, and veneer—ideal for cabinets, furniture assembly, mounting plates, and other DIY projects. Suitable for beginners—enables fast and accurate center location for hinges and mounting plates. Material: Plastic + Alloy Color: As shown Package Contents: 1 set × 35 mm Forstner bit (3 pcs) Other products are not included. Note: Lighting conditions and display settings may cause slight color variation between the image and the actual item. Measurement tolerance: ±1–3 cm.