Suitable for professional woodworkers, carpenters and serious hobbyists who need accurate, efficient drilling and countersinking. Key benefits Consistent countersinking: built-in depth stop ensures uniform countersink depth so screws sit flush without damaging the work surface. Precise and efficient: reduces rework and speeds up repetitive countersinking tasks. Secure drilling: design resists slipping during use for cleaner holes and safer operation. Materials and construction Brass and stainless steel construction for durability and corrosion resistance. Unique depth stop mechanism integrated with the drill to protect surfaces while producing consistent results. Function and compatibility Designed for use with electric drills. Intended for water pipe expansion punch applications while also suitable for general countersinking tasks. Broad compatibility and non-slip performance make these drill bits suitable for a range of drill chucks and working conditions. Performance highlights Durable materials maintain accuracy over repeated use. Depth-controlled countersinking prevents over-drilling and surface damage. Stable, non-slip operation improves hole quality and user control. Typical applications Countersinking screw holes in hardwood, softwood and plywood when building cabinets, furniture and fixtures. Preparing pipe ends or holes for water pipe expansion punch fittings during plumbing and pipe assembly. Accurate pilot and countersink work in carpentry and joinery where surface finish and flush fasteners are required. What you get Drill bits made of brass and stainless steel with an integrated depth stop, compatible with electric drills and suited for water pipe expansion punch use. Order these drills when you need reliable, repeatable countersinks, secure drilling performance and materials designed to resist wear and corrosion.