TOP Kogyo Hex Shank Iron Drill Bit 3.9mm ETD-3.9

• Compatible materials: iron, aluminum, copper, wood • The cutting edge is thinned, allowing drilling at an accurate position • Compatible with 18V impact drivers [Caution] • Always wear protective glasses while working • Avoid wearing gloves while working. They may get caught • Cannot be used to drill heat-treated steel plates • Take care, as applying too much impact can damage the cutting edge • When machining small workpieces, secure them firmly with locking pliers or similar before working