Anfrere 3PCS M2 Step Bits with Center Puch, 28 Sizes M2 HSS Step Drill Bits, 1/8 to 1/2" High Speed Steel Unibit Drill Bits Set for Sheet Steel Metal, Multiple Hole Stepped Up Bits Home Tools, 1014 - ubt1014

• High Speed Steel: The ladder drilling group performs well in heat resistance, corrosion resistance and rust prevention. The high speed steel structure ensures high durability. Good Adaptability: It can easily drill the size you need by comparing the laser engraving size in the ladder drill slot. Only a small amount of pressure is required to cut steel, metal plates and other surfaces and remove burrs. Size Includes: 28 Sizes from 1/8 to 1/2 inch can fit the majority of brands currently on the market. Fast Chip Removal: Double groove design allows easy particle removal for easy cleaning. Versatility and Compatibility: required for manual or professional personnel. The anfrere step drill can quickly drill smooth holes on holes of different diameters such as steel, aluminum, wood and plastic plates.