Cobalt Step Drill - 3/16" - 7/8" - Unibit

The Unibit 10234CB Cobalt Step Drill is a professional-grade solution designed for demanding automotive and industrial applications. This versatile cobalt unibit provides a single tool for drilling 12 distinct hole sizes from 3/16" to 7/8" in various materials, ensuring efficient, precise, and durable performance in challenging work environments.

Key Features

• Extended Tool Life: Constructed from M35 grade Cobalt High-Speed Steel (HSS), this cobalt unibit offers superior hardness, heat, and wear resistance. It delivers up to 6X longer life than standard step drills, particularly when working with tough materials like stainless steel, ensuring reliability during high-speed drilling operations.
• Efficient Drilling Performance: The radial concave flute design optimizes chip removal and minimizes heat buildup, promoting smoother, faster drilling and consistently producing clean, burr-free holes.
• Precision and Versatility: This single tool drills 12 distinct hole sizes from 3/16" to 7/8" in 1/16" increments, streamlining your toolkit and improving accuracy across a range of applications.
• Secure & Stable Operation: A 3-flatted shank design effectively prevents slippage within drill chucks, enhancing both operational safety and drilling accuracy, even under high torque.
• Quick, Accurate Starts: Equipped with a Speedpoint™ tip, also known as a self-starting split point, the drill penetrates surfaces rapidly, prevents "walking," and eliminates the need for a pilot hole, saving time and improving initial accuracy.

Applications

This robust Unibit Cobalt Step Drill is an essential tool for professional technicians and mechanics in automotive repair shops, industrial installations, and general maintenance. It is ideal for creating clean, precise holes in materials such as stainless steel, sheet metal, aluminum, fiberglass, plastics, plexiglass, and wood. Common uses include crafting wiring harness openings, custom mounting components, and general fabrication work where precise hole sizing is critical. Its durability and ability to handle high temperatures make it a reliable choice for frequent use in high-demand settings, contributing to reduced tool changes and increased operational efficiency.