Astro Pneumatic 218 1/8 in Pencil Die Grinder — 56,000 RPM for Tight Spaces

Overview

The Astro Pneumatic 218 1/8-Inch Pencil Type Die Grinder is engineered to reach into tight spots without compromising on speed. Weighing about a quarter of a pound, its balanced, one-handed feel reduces fatigue during extended finishing tasks. The compact profile fits into narrow recesses, making deburring, porting, and precision cleaning more approachable and efficient.

Designed for dynamic control, the tool combines a twist-action variable speed control with a generous reach. The 5-foot guarded hose adds flexibility while helping keep debris and dust away from your workspace. Whether you are working in a body shop, a fabrication shop, or a brake service area, this grinder aims to deliver fast material removal for small parts while preserving delicate surfaces.

Twist-action speed and reach

Twist-action variable speed lets you tune the finish on the fly, accommodating both aggressive deburring and fine detailing. With the 5-foot guarded hose, you can maneuver around tight assemblies, reach internal pockets, and maintain consistent control as you work on dies, rotors, or mounting surfaces.

Key features at a glance

• Lightweight and compact design ideal for tight spots
• Twist throttle provides variable speed control up to 56,000 rpm
• 1/8-inch collet for small-diameter bits
• 5-foot guarded hose included for extended reach and safety
• Versatile for cleaning dies, rotors, backing plates, brake pads, mounts, and more

Real-world uses and benefits

Commonly used in body shops, fabrication shops, brake service areas, and industrial settings, the 218 excels at deburring tiny features, porting small passages, and carefully cleaning contact surfaces. The tool’s lightweight form helps operators maintain smooth control along contours and into recesses, while the high-speed capabilities support rapid task progression without excessive effort.

The combination of speed and precision fosters a workflow that can feel more efficient, especially for small-diameter tasks that demand steady handling and responsive speed control. The compact design and guarded hose contribute to a safer, cleaner workstation when working around delicate assemblies and tight tolerances.

Specs at a glance

• Collet size: 1/8 inch
• Free speed: 56,000 rpm
• Overall length: 5-1/4 inches
• Net weight: 0.25 pounds
• Air inlet: 1/4 inch NPT
• Hose I.D.: 3/8 inch (10 mm)
• Avg air consumption: 4 CFM
• Noise level: 73–75 dB
• Vibration level: 0.07 m/s²
• Air pressure: 90–120 psi
• Hose length: 5 feet

Note: This description highlights typical applications and possibilities; actual results may vary with task, bit type, and setup.