Material：Made of aluminum alloy with surface oxidation treatment, high hardness, anti-rust, strong, durable. The hole jig is a great tool set for furniture-making and woodworking enthusiasts. Precise drilling：Center pins ensure precise alignment when drilling into various surfaces. Drill with precision, drill an evenly spaced hole along the wood. Multiple Sizes：The hand drill tools come with 3 different sizes of drill rings 6mm, 8mm and 10mm in packaging, so that you can easily drill holes of different sizes and meet various hole needs. Portable and easy to use：You can quickly clean the groove design to drain dust. It can be cleaned and put in a cabinet. It does not occupy much space and can be kept well, quick to use. Wide application：This set of drill guide tools for fixing and centering when drilling and working wood. Ideal for fixing on all kinds of panels of different thicknesses, the two claws are practical for quickly adjusting the center of the hole.