Astro 218
Score: 90/100
Ingersoll Rand 301B
Score: 80/100Rankings
The Astro Pneumatic 218 is a lightweight, pencil-style pneumatic die grinder designed for high-speed porting, finishing, and cleaning in tight spaces. It features a 1/8" collet, a free speed of 56,000 RPM, and an ergonomic design that minimizes user fatigue during extended precision work. Best suited for automotive technicians and body shop workers needing precision grinding in confined areas.
The Ingersoll Rand 301B is a compact, right-angle pneumatic die grinder featuring a 0.25 hp motor and 21,000 rpm max speed, designed for precision tasks in confined spaces. It utilizes a durable aluminum housing and ball-bearing construction to ensure longevity and reduced vibration during operation. The tool is optimized for professional fabricators and machinists requiring high-speed grinding.
| Attribute | | |
|---|---|---|
56,000 RPMbest | 21,000 RPM | |
| ↓ lower better | 4 CFMbest | 6 CFM |
| ↓ lower better | 74 dBbest | 92 dB |
| ↓ lower better | 0.07 m/s²best | — |
| ↓ lower better | 0.11 kgbest | 0.46 kg |
133 mm | 134 mmbest | |
— | 0.25 Wbest | |
368 mmbest | 34 mm |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
General(1) | ||
Warranty | Manufacturer Warranty | 1 Year |
Safety & Comfort(1) | ||
Noise Level (dB) | 74 dB | 92 dB |
Compatibility & Controls(3) | ||
Collet Size | 1/8" | 1/4" |
Switch Type | Twist Throttle | Lever |
Tool Type | Pencil Type | Right Angle |
Performance(1) | ||
No-Load Speed (RPM) | 56000 RPM | 21000 RPM |
Dimensions(3) | ||
Overall Length (mm) | 133 mm | 134 mm |
Overall Width (mm) | 368 mm | 34 mm |
Overall Height (mm) | 500 mm | 74 mm |
Power & Air(2) | ||
Power Source | Pneumatic | Air |
Air Consumption (CFM) | 4 CFM | 6 CFM |
Ergonomics & Build(1) | ||
Weight (kg) | 0.11 kg | 0.46 kg |
Products in the top-left offer the best value (high score, low price).
No independent professional reviews or editorials appear in search results; descriptions from manufacturers and retailers emphasize its suitability for high-speed porting in tight spots and reliability in automotive repair, positioning it as a top choice for body shops and exhaust work.
Search results contain no direct consumer reviews, ratings, or testimonials. Common themes from product pages infer praise for lightweight design and tight-spot access, with no recurring complaints documented.
Supplier descriptions and industry editors highlight the Ingersoll Rand 301B as a durable, value-oriented tool trusted for years of service. The metal housing and vane motor are emphasized for their reliability in general use, with the 0.25 hp motor at 21,000 rpm cited as providing sufficient power for porting and deburring tasks.
Direct consumer reviews are scarce, but available data indicates a positive reception with a 4.7/5 rating on one platform. Users generally praise the tool's comfort, lightness, and power, with no common complaints surfacing in the provided research.
