General description The Metal Concealed Hinge Jig is a versatile woodworking tool designed for precise drilling of hinge holes in cabinet doors. Made from high-quality aluminum alloy, this durable jig features an anodized black surface for enhanced corrosion resistance and longevity. It is perfect for both professional woodworkers and DIY enthusiasts, making it an essential addition to any home woodworking project. Technical specifications Material: High-quality aluminum alloy Drill bits included: 6mm, 8mm, 10mm, and 15mm Board thickness compatibility: 5-60mm Drill sleeve hardness: HRC50 Usage Quickly drill casting holes without the need for pre-drilling the mating part. Ideal for creating strong, hidden joints in panel furniture. Self-tightening clamp effectively secures wood during drilling. Other information