# uni Ball Signo Knock RT1 Ballpoint Pen 0.38mm Black | Smooth Ink Flow Writing Instrument **Brand:** 三菱鉛筆 **SKU:** rwq2611 **ASIN:** B00B57W4QU **Canonical URL:** https://crowcrowcrow.com/p/uni-ball-signo-knock-ballpoint-pen-rt1-0-38mm-color-black-umn15538-24/rwq2611 **Category:** home-kitchen **Subcategory:** Categories **Availability:** in_stock **Price (INR, all-inclusive):** ₹928 **Discount:** 34% **Customer rating:** 4.40/5 from 845 ratings ## Description The uni Ball Signo Knock RT1 ballpoint pen offers a precise 0.38mm extra-fine point with smooth, water-based black ink. Its rubber grip ensures comfort for students and professionals. Imported from authorized US retailers, all duties included, arriving via ExpressBox tracked shipping. ## Highlights - Precise 0.38mm Extra-Fine Point — Achieve detailed lines for intricate notes, diagrams, or fine handwriting. Ideal for students and professionals who require precision in their writing tasks. - Smooth Water-Based Ink — Experience consistent, skip-free writing with water-based black ink that flows smoothly across paper. Ensures legible and clear script for all your writing needs. - Comfortable Rubber Grip — The contoured rubber grip provides ergonomic support, reducing fatigue during long writing sessions. Enhances control and comfort for prolonged use. - Retractable Convenience — Easily deploy and retract the pen tip with a click mechanism. Protects the pen point and prevents ink marks in pockets or bags. ## Key features - Uni Knock Ballpoint Pen RT1 - Color Ink Knock Ballpoint Pen - 0.38mm Point - Product Dimensions 4.15 x 2.8 x 1.4 inches ## Why choose this product - Precision Writing for Detail-Oriented Tasks — The uni Ball Signo Knock RT1 excels in delivering fine, consistent lines with its 0.38mm extra-fine point. This makes it perfect for detailed note-taking, precise diagrams, or elegant handwriting. Unlike broader-tipped pens, it allows for clarity and legibility in tight spaces, ensuring your work looks polished. The water-based black ink flows smoothly, providing a skip-free writing experience that professionals and students alike can rely on for important documents and everyday tasks. - Ideal for Students and Office Professionals — This pen is best suited for individuals who value precision and comfort in their writing tools. Students will find it excellent for detailed study notes and exam answers, while office professionals can use it for precise annotations and clear document marking. Those who prefer a fine, consistent line and a comfortable grip will appreciate its design. However, if you require a bold line or a pen for extensive artistic sketching, a broader tip might be more suitable. For everyday writing, it offers reliable performance and a comfortable feel. ## How to use 1. Press the top clicker mechanism to extend the pen's fine point, preparing it for writing. Ensure the tip is fully extended before use. — Extend the Tip 2. Hold the pen comfortably using the rubber grip and write with light pressure. The 0.38mm tip is ideal for detailed work and clear script. — Write with Precision 3. When finished writing, press the clicker again to retract the pen tip. Store the pen in a pocket or bag, clip-side out, to prevent ink marks. — Retract and Store ## Product details | Field | Value | |---|---| | Ink Base | Water | | Special Features | Retractable, Rubber Grip, Water-Resistant | | Recommended Use | Writing, Note-taking, Detailed Work | | Writing Technique | Ballpoint | | Line Size | 0.3mm | | Cost per use | 1 pen at {{ccc_offer_price}} — {{ccc_price_per_unit:1:pen}} | | Shelf life after opening | 12M | | Reapplication math | N/A (Durable Item) | | Contraindications | Not recommended for use on legal or official documents where permanence is critical. | | Allergens / common irritants | None listed | | Brand | uni Ball | | Model Name | Signo RT1 | | Part Number | UMN15538.24 | | Color | Black | | Ink Type | Water-based Ballpoint Ink | | Point Type | Extra Fine (0.38mm) | | Grip Type | Rubber | | Body Material | Plastic | | Dimensions | 4.15 x 2.8 x 1.4 inches (10.5 x 7.1 x 3.6 cm) | | Item Weight | 0.01 lbs (0.005 kg) | | Count | 1 | | Country of Origin | Not stated by manufacturer — US retail version, sourced from authorized US retailers | ## Frequently asked questions ### How is this uni Ball Signo Knock RT1 pen authentic vs the version sold in Indian stores? Sourced directly from authorized US retailers (Amazon.com, Walmart, Costco), factory-sealed, imported per-order. Same SKU and formulation US buyers receive. All customs duties and GST included in the displayed price. Arrives 2-8 days via ExpressBox tracked shipping. ### Will the uni Ball Signo Knock RT1 pen I receive match what is shown on the US retailer's page? Yes - orders are placed against the listed US retailer page at the time of purchase. Batch codes, packaging, and labels match what the US retailer dispatches. Photographs of every order are taken before international handover. ### What is the ink type and color of the uni Ball Signo Knock RT1 pen? This pen uses water-based ballpoint ink in black. The ink is designed for smooth, consistent writing and is suitable for detailed notes and everyday use. ### What is the point size of the uni Ball Signo Knock RT1 pen? The uni Ball Signo Knock RT1 features an extra-fine point of 0.38mm, ideal for precise writing and detailed work where clarity is essential. ### Is the uni Ball Signo Knock RT1 pen refillable? This specific model is not designed to be refillable. It is a disposable pen intended for single use. For refillable options, please explore other Pilot models. ### What are the dimensions and weight of the uni Ball Signo Knock RT1 pen? The pen measures approximately 4.15 x 2.8 x 1.4 inches (10.5 x 7.1 x 3.6 cm) and weighs about 0.01 lbs (0.005 kg), making it lightweight and portable. ### Can I use the uni Ball Signo Knock RT1 pen for official documents? While the ink is water-based and generally reliable, it is not specifically recommended for legal or official documents where extreme permanence is critical, as it may be susceptible to smudging or water damage over time. ### What is the best way to use the uni Ball Signo Knock RT1 pen? Simply click the top button to extend the pen tip for writing. Use the clip to attach it to notebooks or pockets. Click again to retract the tip when not in use. ### What is the difference between this and other uni Ball pens? The Signo Knock RT1 focuses on a fine 0.38mm point and a retractable design with a comfortable rubber grip, offering precision for detailed writing tasks. ### What is the best ballpoint pen for Indian students? For Indian students valuing precision, the uni Ball Signo Knock RT1 offers a fine 0.38mm point and smooth writing. Consider pens with comfortable grips for long study sessions. ## Compliance No product-specific compliance warnings identified. Standard imported-goods terms apply: customs duties & GST paid; for personal use in India; follow the manufacturer's usage instructions on the packaging. ## Images 1. https://images.crowcrowcrow.com/B00B57W4QU-0.webp 2. https://images.crowcrowcrow.com/B00B57W4QU-3.webp 3. https://images.crowcrowcrow.com/B00B57W4QU-8.webp 4. https://images.crowcrowcrow.com/B00B57W4QU-11.webp 5. https://images.crowcrowcrow.com/B00B57W4QU-14.webp 6. https://images.crowcrowcrow.com/B00B57W4QU-17.webp --- Source: https://crowcrowcrow.com/p/uni-ball-signo-knock-ballpoint-pen-rt1-0-38mm-color-black-umn15538-24/rwq2611 Returns: 30 days, free, by mail. Shipping: Free across India, 7–13 business days. Prices are all-inclusive (duties + GST).