Name: door and window hinge, hinge hole toolMaterial: brass case, high speed steel diamond core, electroplated appearanceWeight: 0.24kgPlastic box size: 13.5*13.5*1.8cm8 OPP-Hole size:5/64'': the diameter of the opening hole is about 2mm, and the self-tapping screw of about 2.2-2.8mm is used.7/64'': the diameter of the opening hole is about 2.8, using about 3-self-tapping screw9/64'': the diameter of the opening hole is about 3.5, using about 4-self-tapping screws11/64'': the diameter of the opening hole is about 4.5, using about 5-self-tapping screws5mm: the diameter of the opening hole is about 5mm, and the self-tapping screw of about 5.5-6mm is used.13/64'': the diameter of the opening hole is about 5.2, using about 6-self-tapping screws1/4'': the diameter of the opening hole is about 6.35, using about 7-self-tapping screwsUsage: when opening the hole, Please adjust it according to the hardness of the wood. If the wood is soft, you can choose the smaller one. If the wood is hard, you can choose the corresponding one or the larger one.Features: accurate positioning, no displacement, wood chips will be automatically discharged from the holes on both sides of the top of the drill bit, and will not jam the drill bit. Door and window hinges are fixed to doors and windows through screws. This product is used to open holes for screw holes of door and window hinges. The drill sleeve can well fix the position to ensure the accuracy of drilling, it is a good tool to improve the drilling efficiency of coaches!