TOP Kogyo Hex Shank Spiral Step Drill Bit 4 to 22mm ESD-422S

• Spiral blade shape provides light cutting action and improved durability • Compatible materials: steel plate (2mm), stainless steel plate (1mm), plastic, wood, etc. • The cutting edge is thinned, allowing drilling at an accurate position • Compatible with 18V impact drivers [Caution] • Use a cordless drill of 12V or higher • Always wear protective glasses while working • Do not use on heat-treated metal plates • Apply cutting oil to stainless steel plates and work at 1/2 the rotation speed used for steel • The drill gets hot during use, so do not touch it with bare hands