Overview
The document provides detailed specifications and features of Hitachi's 18V Cordless Framing Nailers, specifically models NR1890DBCL and NR1890DBRL. These nailers are designed for framing applications and offer advantages such as no need for compressors or hoses, high driving performance, and lower running costs.

Specifications
- Models: NR1890DBCL and NR1890DBRL
- Battery Options: 6.0Ah, 5.0Ah, 3.0Ah for NR1890DBCL; 5.0Ah for NR1890DBRL
- Nail Length: 50mm to 90mm
- Driving System: Air Spring
- Firing Mode: Full sequential/Contact (Selectable)
- Driving Speed: 1.5 to 2 nails/sec
- Weight: 4.5kg to 4.9kg depending on battery
- Dimensions: NR1890DBCL - 342 x 342 x 137mm; NR1890DBRL - 342 x 309 x 127mm

Features
- Air Spring Drive System: Utilizes compressed air sealed in the main unit for consistent performance.
- Brushless Motor Technology: Offers low maintenance due to no wearing parts.
- Battery Compatibility: Compatible with all Hitachi 18V slide-type Lithium-ion cordless tools.
- Integrated Operation Panel: Features push-button switches for mode selection and battery power check.
- Tool-less Depth of Drive Adjustment: Allows easy adjustment of nail depth.
- Dry-fire Lockout: Prevents activation when nail count is low.

Performance and Cost Efficiency
- High Driving Performance: Drives 1.5 to 2 nails per second with zero ramp-up time.
- Lower Running Costs: No gas cartridges needed, reducing operational costs.
- Maintenance: No need for regular cleaning of a combustion chamber, and the brushless motor requires less maintenance.

Additional Information
- Operating Environment: Suitable for temperatures between 0℃ and 40℃.
- Standard Accessories: Include charger, batteries, battery cover, case, safety glasses, and hex wrench.

The document emphasizes the benefits of combining cordless and pneumatic technologies, offering users more power and freedom in framing applications.