3-piece alloy drill bit set designed for tapered hole cutting with durable titanium coating and metal hex shanks. Key benefits Precise taper cutting: Designed as a taper hole cutter to create or enlarge tapered holes reliably across the specified metric range. Durable, high-performance finish: Titanium coating improves wear resistance and cutting life for more consistent results over repeated use. Secure, easy installation: Metal hex shanks provide a positive drive and fit standard hex chucks and quick-change drivers for stable, slip-free operation. Compact set for common taper sizes: Three bits cover the included taper sizes so you can pick the correct cutter for the job without carrying a large tool set. What’s included and specifications 3-piece alloy drill bit set. Taper metric range from 4 to 12/20 / 32 mm (04.01 Inch). Metal hex drill bits with titanium coating. The set includes sizes 3 12 and 4 20 round, and also has a 4 12 set. How this set solves common problems Eliminates poorly shaped holes: Produces consistent tapered profiles so fasteners, inserts, or fittings seat correctly. Reduces tool replacement frequency: Titanium coating increases resistance to wear and helps maintain cutting performance longer than uncoated bits. Minimizes slipping and misalignment: Hex shanks lock into drivers to reduce cam-out and improve accuracy, especially in handheld or rapid-change applications. Practical use scenarios Installing tapered inserts or fittings where a precise tapered seat is required for a secure fit. Repair and retrofit work that requires enlarging or reshaping existing holes to accept replacement parts or hardware. Production or assembly tasks that need quick bit changes and a reliable hex-driven connection for repeatable results. Materials, compatibility, and performance notes Constructed from alloy with a titanium coating for improved wear resistance and cutting consistency. Hex shanks are compatible with standard hex chucks and quick-change driver systems. Intended for tapered hole cutting applications across the listed metric range. Purchase with confidence when you need a compact, durable set of tapered hole cutters with secure hex shanks and improved longevity from a titanium coating.