4T 12 HOLE SIZES(3/16"-7/8") - Vise-Grip

The Vise-Grip 15104 Unibit #4 Titanium Step Drill Bit is a professional-grade tool engineered for precision hole drilling in a variety of thin materials. Designed with a durable high-speed steel construction and a Titanium Nitride coating, this step drill bit delivers reliable performance and extended tool life for demanding automotive and industrial applications. It is an ideal solution for technicians requiring multiple hole sizes from a single, versatile bit.

Key Features

• 12-Hole Versatility: Drills 12 distinct hole sizes ranging from 3/16" to 7/8" in 1/16" increments, eliminating the need for frequent bit changes.
• Titanium Nitride Coating: The Titanium Nitride (TiN) finish resists heat and friction, significantly extending the cutting edge life, up to six times longer than standard high-speed steel step drill bits.
• SpeedPoint Tip: Features a new SpeedPoint tip that penetrates materials faster and effectively prevents bit walking for clean, accurate starts.
• Single-Flute Cutting Edge: Provides enhanced control through each step, ensuring perfectly round holes and reducing wobble during drilling.
• 3-Flatted Shank: A robust 3/8-inch, 3-flatted shank prevents slipping in the drill chuck, offering a secure grip and improved power transfer.

Applications

This Vise-Grip Unibit is specifically designed for drilling into thin materials up to 1/8 inch thick. It is highly effective for creating holes in stainless steel, copper, brass, aluminum, plastic, and laminates. Professional technicians and mechanics will find it invaluable for tasks such as fabricating custom panels, installing electrical components, or making modifications where precise, clean holes are essential. It is also suitable for enlarging existing holes or creating countersinks in various materials.