The Milwaukee 48899399 3Pc Step Drill Bit Set, a must-have tool for professionals in electrical, plumbing, HVAC, metal fabrication, automotive, and maintenance repair operations. Introducing the Milwaukee 48899399 3Pc Step Drill Bit Set, a must-have tool for professionals in electrical, plumbing, HVAC, metal fabrication, automotive, and maintenance repair operations. This set is designed to deliver up to 4x more life and 2x faster drilling, making it an efficient and reliable choice for your toolbox.The Milwaukee 3Pc Step Drill Bit Set is the perfect solution for enlarging existing holes, drilling into ferrous and non-ferrous sheet metals, profiles and pipes, copper, brass, aluminium, stainless steel, and plastics. With a maximum material thickness of 4mm, these drill bits are more durable than standard twist drill bits, featuring a thick core that resists breakage and ensures clean, burr-free holes with less reaming required. The set includes three step drill bits with rapid strike tips for improved centering, reducing the need to punch or pre-drill the material. The special tip and step geometry offer a jam-free performance, reducing the risk of drill snagging when used with high-speed cordless tools and preventing deformation of the drilled material. Each drill bit is produced from custom-engineered steel with a black oxide coating, ensuring 4x longer life. The optimized 2 flute ground sharpened edge geometry allows for 2x faster and smoother cutting. The laser-engraved size markings on each bit ensure long-term visibility, while the 3 flat secure grip prevents the step drill from slipping in the chuck, ensuring maximum transmission of torque. The Milwaukee 48899399 3Pc Step Drill Bit Set is optimized for use with high-speed cordless drills, making it a versatile addition to your tool collection. Purchase today and experience the quality, reliability, and performance that Milwaukee tools are known for.