Precise depth control This aluminum alloy drill bit set features an adjustable depthlimiting mechanism that delivers consistent drilling accuracy and prevents drilling too deep or too shallow in metal or wood workpieces. You get the exact hole depth you need for professionallooking results every time. Versatile application Tackle multiple materials with confidence. The bits work effectively on wood, aluminum, and other metals, and are compatible with most power drills. They maintain their cutting integrity while creating clean, precise holes for dowels, cabinet hardware, and joinery work. quality construction Crafted from alloy steel with special heat treatment that enhances hardness and wear resistance, these bits keep a sharp cutting edge through repeated use. This delivers reliable performance with less frequent replacements and helps you complete projects faster with less effort. Quick change system Tool bit installation and removal allows effortless switching between different operations. Simply insert or detach with minimal downtime, increasing workflow efficiency in both woodworking and metalworking tasks. Use scenarios Installing cabinet hardware or assembling furniture where accurate, depthcontrolled dowel holes and joinery are required. Dowel joinery in wood projects, ensuring consistent hole depth for precise alignment and strong joints. Drilling through aluminum or other metals for brackets, hardware, or shelf supports with clean, uniform holes.