Ballpoint pen Claro Sigma Plus 1.0 mm tip, black ink

The Claro Sigma Plus ballpoint pen features a 1.0 mm tip and black ink, engineered for consistent medium-thick lines in everyday writing. Its balanced weight and comfortable grip allow for extended handwriting sessions, while the reliable ink flow supports tasks ranging from quick notes to formal signatures. The design is compatible with standard pen holders and common office or school environments, and refill information is available from the manufacturer.

Advantages

The 1.0 mm tip provides a steady, medium line that suits general-purpose writing without excessive bleeding on standard paper. Black ink offers high contrast and permanence for forms and signatures. The pen’s ergonomic shape reduces hand fatigue during prolonged use, and its construction ensures consistent ink delivery with minimal skipping. The product is simple to use and store, making it practical for everyday office and academic needs.

Suitable for

• Daily note-taking and journaling
• Filling out forms and documents
• Signing checks and official papers
• School assignments and classroom use
• General office tasks and meetings

Key specifications

• Tip size: 1.0 mm (medium)
• Ink color: black
• Writing style: ballpoint with consistent ink flow
• Grip: ergonomic barrel for comfortable handling
• Line width: medium-thick lines suitable for standard paper
• Compatibility: fits common pen holders and desktop organizers

How to use

Uncap the pen or retract the tip according to the model and begin writing with light, even pressure to maintain a consistent line. Store the pen horizontally or with the tip pointing upward when not in use to reduce the chance of drying. Replace the refill or consult the manufacturer for refill options when ink output decreases. Keep the pen capped between uses to preserve ink quality.

Usage recommendations

For best results, use on standard office or school paper (70–100 g/m²). Avoid prolonged contact with moisture and extreme temperatures. If fine detail is required, consider a smaller tip size; for bolder lines, apply slightly firmer pressure while writing.