IRWIN 10234CB STEP DRL COBALT #4 3/16-7/8″ 12 SZ

Engineered for precision and longevity, this step drill offers an innovative solution for users seeking to drill through various materials with ease. The M35 grade cobalt alloy High-Speed Steel ensures enhanced durability, complemented by a unique speedpoint tip that facilitates quick drilling. With sizes laser-marked for easy identification and a radial concave flute design that efficiently removes chips, it is designed to tackle applications from 3/16 inch to 7/8 inch. Notably, this drill bit boasts a remarkable lifespan, reportedly 6 times longer than competing options, making it a reliable choice for both professionals and DIY enthusiasts.