# Bosch 18V Compact Brushless 1/2 In. Drill/Driver Kit (GSR18V-400B12)

**Category**: cordless-power-tools | **Price**: ~$120–$170 | **Reviews referenced**: 299
**Last updated**: 2026-04-17
## One-line verdict
Compact powerhouse for contractors and advanced DIYers needing a lightweight 18V drill that fits tight spaces but trades some max torque for everyday heavy-duty jobs against bulkier rivals.

## How it compares

- vs DEWALT 20V MAX XR Hammer Drill ($200–$270): Bosch wins on compact size and tight-space maneuverability, DEWALT wins on max torque output and hammer/masonry capability
- vs Milwaukee M18 FUEL 2-Tool Combo Kit ($349–$399): Bosch wins on portability and price, Milwaukee wins on raw power, runtime, and value as a bundled two-tool system
- vs Milwaukee M18 Cordless 1/4 in. Ratchet ($149–$199): Bosch wins on drilling and driving versatility, Milwaukee wins on fastening speed in automotive/mechanical tight-space applications
- vs Makita LXT 18V Cordless Circular Saw ($150–$200): Bosch wins on general-purpose utility across drilling tasks, Makita wins on cutting capability for sheet goods and framing

## AI-summarized review themes

### Frequently Praised
- Compact and lightweight, easy to maneuver in confined or overhead spaces
- Sufficient power for typical household drilling and driving tasks
- Preferred by contractors over heavier models for its weight and noise level

### Frequently Criticized
- Chuck slips on heavy-duty material, unreliable grip under load
- Lower torque than full-size models, limiting demanding applications
- Included case deteriorates quickly, joints separating after minimal use

## Best for
tight-space drilling, overhead work, one-handed operation, {advanced DIYers, contractors}

## Not for
heavy masonry or lag bolts, extended high-torque jobs, {users needing max power over compactness}

## Specifications
| Spec | Value |
|---|---|
| Battery Platform Ecosystem | Bosch 18V AMPShare™ |
| Brushless Motor Technology | Yes |
| Chuck Size | 1/2 in. all-metal keyless |
| Maximum Torque | 400 in.-lbs. |
| Tool Weight (with battery) | 1.95 lb |
| Battery Voltage & Capacity | 18V, 2.0 Ah included |
| Clutch Settings | 20 + drill mode |
| Variable Speed RPM | 0-500 / 0-1,900 |
| Length | 6.3 in. |
| Warranty | 5 years tool / 3 years battery |

## Data sources
- Estimated ~299 purchase reviews via Amazon, Lowes
- Review period: 2023-2026
- Sentiment confidence: high