Allegiance 1/4-Inch Ball Shape Carbide Burr SD-1 Double Cut with 1/4-Inch Shank for Metal Grinding Hollowing and Contouring Steel

The Go-To Burr for Hollowing and Shaping

When you need to hollow out a workpiece, create a concave profile, or deburr the inside of a pipe, a flat burr just won't cut it. The Allegiance SD-1 is a 1/4" ball-shaped burr designed for exactly that. Its "double cut" (cross-cut) flutes give you smooth, controllable grinding and a finer finish, breaking down tough steel and cast iron into small, manageable chips.

Key Features

• Double-Cut Head: Produces small chips for smooth operation and a finer finish. Ideal for ferrous and non-ferrous metals.
• Ball Shape (SD-1): Perfect for hollowing, creating concave profiles, and deburring the inside of pipes or holes.
• Solid Tungsten Carbide: Made from one solid piece of carbide for maximum rigidity, high-heat tolerance, and a long cutting life.
• 1/4-Inch Shank: The industry standard shank, compatible with most 1/4-inch die grinders and rotary tools.
• Versatile Application: Makes quick work of deburring, shaping, porting, and contouring on steel, cast iron, and aluminum.

What's Included

• (1) 1/4" Double Cut Ball Shape Solid Carbide Burr (SD-1 Equivalent)

Specifications

This high-performance burr needs a tool with serious RPM to get the best results. To get the most out of this bit with smooth, reliable power, we highly recommend pairing it with the Bosch GGS 28 C 1/4" Die Grinder.