Feature:1. Made of super hard thick alloy material to make the blade more of sharpness and durable2. The head of the machine body using curved curve, which is conducive to chip removal and high perforation efficiency3. The whole body is lengthened and thickened, brings more accurate positioning, saving time and effort4. The product have wide range of applications, including furniture, door locks, hinges, woodworking5. Compatible models contain hand drills, bench drills, and lithium drills, which is convenient and practicalSpecification:Item Type: Hinge Hole CutterMaterial: Alloy steelSpecification: Approx. 15mm / 0.6in20mm / 0.8in25mm / 1in30mm / 1.2in35mm / 1.4inScope of Application: Furniture, door locks, hinges, woodworkingCompatible Models: Hand drill, bench drill, lithium drill Shank Diameter: Approx. 7mm / 0.3inTotal Length: Approx. 78mm / 3.1inProcessing Depth: Approx. 10 ~ 40mm / 0.4 ~ 1.6in.Package List:5 x Hinge Hole Cutter2 x Hex