General description The Drill Bit Guide set includes 4 pieces designed for woodworking and carpentry enthusiasts. Made from durable aluminum alloy with a surface oxidation treatment, this tool set is strong, anti-rust, and built to last. It ensures precise drilling with center axes that align accurately on various surfaces, making it ideal for furniture making and other woodworking projects. Technical specifications Material: Aluminum alloy Drill bushing sizes: 6mm, 8mm, 10mm Usage Drill accurately and evenly spaced holes in wood. Fix and center when drilling on panels of different thicknesses. Quickly adjust the center of the hole using the two claws. Other information Portable and easy to clean with a groove design for dust removal. Compact storage; does not take up much space.