Step Drill Bit Set, 3/16–1-3/8 Inch, Cobalt High Speed Steel

Overview

This step drill bit set includes nineteen precise sizes ranging from 3/16 to 1-3/8 inch, designed to handle diverse drilling needs across multiple materials. The cobalt high-speed steel construction with AlTiN coating delivers long-lasting sharpness and durability for demanding applications.

The 118° tip and four-flute design optimize cutting performance, ensuring fast chip clearing, minimal heat buildup, and clean, burr-free holes. The triangular shank fits standard drills for quick, secure bit changes, making it compatible with a wide range of power tools for both DIY and professional use.

Features

• Nineteen step sizes eliminate frequent bit changes
• Cobalt high-speed steel with AlTiN coating for extended tool life
• 118° tip angle with four-flute design for efficient chip clearing
• Minimal heat buildup for burr-free drilling
• Universal triangular shank design for standard drills
• Compatible with wood, plastic, fiberglass, metal sheets, and stainless steel

Materials & Care

Made from cobalt high-speed steel with AlTiN coating for superior wear resistance and durability across tough materials.