Featuring a durable black oxide finish and high-speed steel construction, this versatile tool creates clean, accurate holes from 1/8" to 1/2". The spiral flute design efficiently removes material while the hex shank ensures secure tool holding and prevents slipping during use.The progressive diameter increases make it perfect for sheet metal, thin steel, aluminum, plastic, and other materials.This grade step drill bit features durable construction to maintain sharp cutting edges and deliver consistent performance across multiple drilling applications.