Features: The embedded level bubble design can be used to hanging pictures/install shelves/decorate leveling. 5 specifications of vertical drilling holes can be used with corresponding specifications of drilling bit to assist in positioning and drilling. The product is equipped with a L-shaped wrench, which is easy to disassemble and easy to operate. Designed for woodworkers, DIY enthusiasts, and professional craftsmen seeking error free drilling accuracy across woodworking projects and multiple materials applications. Optimize drilling tasks on workshop benches, home repair job, or circulars pipe installations while maintaining stability on slippery or uneven surfaces. Specifications: Material: Aluminum Alloy Color: Blue Straight hole diameters: 6, 7, 8, 9, 10mm Size 100x35x34mm/3.94x1.38x1.34in Package Includes: 1pc Hole Drilling Locator note: Please allow 1-3cm error due to manual measurement. Please make surer you not mind before your bid. Due to the differences between different monitors, the picture may not reflect the actual color to the item. Thanks!