**Product Specifications:**
**Brand:** Pentel
**Model:** TRJ50
**Description:** Large nib signature pen with a large capacity duckbill-shaped fiber tip for direct liquid ink.
**Features:**
- Duckbill-shaped double-sided fiber tip for variable line widths suitable for signatures, drawing, writing, outlining, etc.
- Direct liquid ink system that is resistant to ink breakage, ensuring even and stable ink flow for precise artwork.
- Available in three colors (black, red, blue) for varied writing needs, enhancing note-taking and readability.
- Features a visible pen cap with a transparent window design to easily identify and select the pen tip color.
- Large ink capacity with replaceable refills, compatible with MLJ20 pen refills.
**Specifications:**
- Brand: Pentel
- Name: Large Nib Signature Pen
- Model: TRJ50
- Origin: Japan
- Pen Body Colors: Black/Blue/Red
- Refill Type: MLJ20 series
- Packaging: Single pack
- Tip Size: 0.7-2mm
- Length: 143mm (*slight manual measurement discrepancies may occur*)
**Additional Information:**
- Pentel has developed a range of writing tools and maintains production facilities and quality control systems in Japan, France, the United States, Mainland China, and Taiwan to ensure consistent product quality.
- Awarded the Deming Prize in 1976 for its stringent quality management practices, Pentel remains a prestigious stationery manufacturer with a reputation for excellence in "Japanese manufacturing."
(Note: The provided information has been summarized and organized into product specifications format.)
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