toolant Four Spiral Flute Cobalt Step Drill Bit(Pro Max), 3/16" - 1-3/8"(19 Step Size) Unibit Step Drill Bit, 3/8" Shank Step Bit for Metal, Stainless Steel, Aluminum, Wood, Plastic

Key features

• FOUR SPIRAL FLUTE - Four cutting blades design guarantees a faster and smoother cutting. Feels like a hot knife through butter!
• TiAlN COATING- With 89HRC surface hardness, harder materials can be cut and higher cutting speeds can be achieved.
• M35 COBALT HSS STEP DRILL - Prefect for Stainless Steel/Metal Sheet/Wood/Plastic/Aluminum Sheet/Copper and other metal sheets.
• 3/8" SHANK - Eliminate slipping
• DIMENSION - Includes from 7/8" to 1-3/8". Popular Size 7/8“, 1-1/8", 1-3/8" labeled