35-517

35-517 is a step drill bit. It is designed for precise, repetitive drilling through the toughest materials like brass, carbon steel, cast iron, stainless steel, and more. This robust tool features a rugged titanium nitride exterior coating that ensures protection, edge retention, and corrosion resistance. Each step is gradually blended to ease transitions through hole sizes, reducing the need for constant bit changes. The split point design eliminates the need for a starter hole or punch, delivering starts that are three times faster and saving you valuable time. The double-fluted design offers balanced cuts, more cutting surface compared to single flute designs, and cooler operation, making this bit the best choice for efficiency and durability.

• Radius blended, multi-diameter steps for smooth drilling and reduced need to keep changing drill bit
• Hole sizes: 1/4" - 1-3/8"