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**Product Specifications:**

**Brand:** Genvana

**Product Name:** Dual Line Drawing Pen

**Model:** G-09903

**Specifications:** 12 pens per box

**Size:** 136mm

**Tip:** Dual-tip

**Ink Color:** Black

**Line Width:** 0.3mm

**Product Information:**

Suitable for architects’ exams, ideal for drawing double lines

Ink does not fade easily

Hand measurements, with a normal error range of ±1-2mm

**Details Presentation:**

Features dual-line and dual-tip design

Ideal for drawing double wall lines and gaining an edge in exams

Comfortable to hold with a rounded pen body

**Additional Features:**

Ink colors available in 0.1mm, 0.3mm, and 0.5mm

Convenient pen clip for easy carrying

**Real Photography Show:**

Detailed images showcasing the product

**Warning:**

G-09901, G-09903, G-09905 are the model numbers for the Dual Line Drawing Pen

**Note:** Genvana is the brand name mentioned as Genvana in the text.