Usage Tips:Features: material: The drill locator is made of external wrapped plastic material and internal hard metal material, which is high density, wear-resistant and wear-resistant. corrosion, and can be used for a long time. Self-drilling guide hole: The drill locator has a steel drill guide built into the internal drill hole to prevent the guide hole from wearing out during drilling, which will result in a larger guide hole and loss of accuracy. Multi-size drilling: Two drilling aids with different precision are available for your choice, each positioner has six different sized drilling holes, they are compatible with most tension screws. Wide range of applications: The multi-functional woodworking drilling aid can be applied to cable railings, furniture making and DIY woodworking projects, #39;installation of aluminum and stainless steel deck posts, etc. Specification: Notes: 1. Due to different monitors and lighting effects, the actual color may be slightly different from the image. 2. Due to manual measurement, please allow 1-3cm deviation.