A three-quarter angle studio shot of the Monster Tool SD-1 1/4-inch ball-shaped carbide burr.
A close-up macro shot of the double-cut (cross-cut) flutes on the 1/4-inch ball-shaped head of the Monster Tool SD-1 burr.
A studio shot of the Monster Tool SD-1 carbide burr, with a magnified inset showing a close-up of the double-cut flutes.
A three-quarter angle studio shot of the Monster Tool SD-1 1/4-inch ball-shaped carbide burr.
A close-up macro shot of the double-cut (cross-cut) flutes on the 1/4-inch ball-shaped head of the Monster Tool SD-1 burr.
A studio shot of the Monster Tool SD-1 carbide burr, with a magnified inset showing a close-up of the double-cut flutes.
Monster Tool

Monster Tool SD-1 1/4-Inch Double Cut Ball Shape Solid Carbide Burr 1/4-Inch Shank for Metal Grinding Hollowing Contouring and Deburring Steel

In stock
SKU: 310-002089C
$9.65
Description

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 Monster Tool 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: The most popular style for ferrous applications, offering better operator control and rapid stock removal.
  • Ball Shape (SD-1): Perfect for hollowing, creating concave profiles, and deburring the inside of pipes or holes.
  • Premium Solid Carbide: Made from Sub-Micron C-2 grade carbide with 8-10% cobalt for maximum rigidity, 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 contouring, hole deburring, and welding prep on steel, cast iron, and aluminum.

What's Included

  • (1) SD-1 1/4" Double Cut Ball Shape Solid Carbide Burr (310-002089C)

Specifications

Specification Detail
Brand Monster Tool
Model SD-1
SKU 310-002089C
Material Solid Carbide (C-2 Grade, 8-10% Cobalt)
Cut Type Double Cut (Cross-Cut)
Head Shape Ball Shape
Head Diameter 1/4"
Head Length of Cut 7/32"
Shank Diameter 1/4"
Overall Length 2"
Coating Uncoated (Bright)
Application Steel, Cast Iron, Non-Ferrous Metals

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 Makita GD0601 1/4" Die Grinder.