Astro Pneumatic 218 1/8-inch Pencil Die Grinder – 56,000 RPM, Lightweight for Tight Spaces

Overview

The Astro Pneumatic 218 pencil die grinder blends compact design with serious speed, making it a versatile companion in crowded workspaces. With a free speed of 56,000 rpm and a 1/8-inch collet, it is built for fine detailing, high-speed porting, and finishing small parts. The lightweight form keeps fatigue low during long sessions, while the 5-foot guarded hose adds length and protection for mobile use around benches and vehicles.

Built for tight spaces and precise control

Designed to fit into narrow gaps, this tool excels at cleaning and smoothing tight contours on dies, rotors, backing plates, brake pads, mounts, and other small components. The twist-action variable speed control lets you tailor the airflow and speed to delicate tasks or brisk material removal, providing a smoother, more controlled workflow in challenging spots.

Two practical benefit areas

• Compact power for confined areas: bend and shape without heavy tooling.
• Quick finishing and detail work: high-speed porting keeps edges clean and smooth.

What’s included in the tool’s design

• Lightweight construction: weighs about 1/4 pound, length around 5-1/4 inches
• Twist throttle with variable speed control for flexible operation
• 5-foot guarded air hose for safer and extended reach
• 1/8-inch collet and a free speed of 56,000 rpm for precise finishing

Operational considerations include running at typical workshop pressures (90–120 psi) with an air flow around 4 cfm and a moderate noise profile (around 73–75 dB). The tool’s low vibration level helps reduce user fatigue during detailed work. Pair it with appropriate PPE and follow standard shop safety practices for best results, and consider this model as a capable option for rapid cleanup and finishing in shops that handle dies, rotors, or small assemblies.