**Specifications:**
**Brand:** deli
**Product Name:** Bullet Tip Gel Pen
**Model Number:** SA179
**Writing Type:** Click
**Tip Size:** 0.5mm
**Ink Color:** Red
**Packaging Size:** (145x72x28)mm
**Packaging Quantity:** 12 pens per box
**Writing Features:**
- Smooth writing experience
- Comfortable grip with 2mm soft rubber sleeve
- Consistent ink flow for smooth and bold writing
- Swiss MIKRON tungsten carbide ball for improved performance
- Reduced surface roughness to 0.012Ra
- Friction coefficient reduced to 0.2u
- Long-lasting ink, capable of writing over 400 meters
**Additional Information:**
- Pen clip design for easy carrying
- Refillable pen with 0.5mm tip
**Note:**
- Surface roughness and friction coefficient values are based on deli laboratory tests and may vary slightly due to external conditions.
**Disclaimer:**
- The friction coefficient value of 0.185 is based on deli laboratory testing and may have slight variations due to external conditions.
**Quality Assurance:**
- Each pen is designed with attention to detail to ensure a comfortable and durable writing experience.
*All data is sourced from deli laboratory tests. Product dimensions may have a margin of error of ±1mm. Please refer to the actual product for accurate measurements.*
