✅【SHARPER CUTTING EDGE】-- The fine grinding process can make the cutting edge of the drill sharper
✅【IMPROVED QUALITY】-- Reduce the cutting force and broken of drill, improve the quality of the hole wall
✅【TUNGSTEN CARBIDE】-- Using high‑quality tungsten carbide material, high hardness, wear resistance
✅【CLEANING NOZZLE DRILL】-- 3D printer cleaning nozzle drill, easy to install and disassemble, long service life
✅【ACCURACY PROCESSING】-- Suitable for processing of accuracy metal parts such as printed circuit board SMT CNC boards, molds, plastics, copper, stainless steel, etc.