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**Specifications:**

**Brand:** Dian Shi

**Product Name:** Self-Control Ink Ballpoint Pen DS-904

**Model:** DS-904

**Ink Color:** Black, Red

**Tip Size:** 0.5mm

**Packaging:** Set of 5 Black + 1 Red

**Features:**

– High-capacity brush pen for solving equations

– Equipped with self-control ink system

– Smooth and stable writing experience

– Quick-drying ink for clean paper surface

– Four-point support pen tip for durability and stability

– Made with wear-resistant and drop-resistant materials

**Product Dimensions:** 14cm

**Ink Capacity:** 10.5m per pen

**Standards:** GB21027, GB/T32017

**Design Patent:** ZL2016302162373

**Manufacturer:** Qingdao Dian Shi Stationery Co., Ltd.

**Address:** North Huari Road, Xiagezhuang Town, Qingdao, China

**Contact:** 0532-85698770

**Origin:** China

**Set Composition:** 5 Black Pens, 1 Red Pen

**Additional Information:**

The DS-904 Self-Control Ink Ballpoint Pen by Dian Shi is an original design featuring a unique self-control ink system for smooth and stable writing. The pen is ideal for precise writing tasks and is equipped with quick-drying ink to ensure a clean paper surface. Each pen in the set has a 0.5mm tip and comes in black and red ink colors. The product meets Chinese quality standards and holds a design patent.