Features:1.2-in-1 Functionality: This practical ballpoint pen combines the precision of a 1. 0mm caliper measuring tool with a smooth-writing ballpoint making it ideal for both measuring and writing tasks.2.Durable and Long-Lasting: With a replaceable refill and a robust plastic vernier caliper design this pen is built to last ensuring it remains a reliable tool for craftsman measuring uses.3.Versatile Gift Idea: Suitable for kids students and adults this caliper measuring ballpoint pen makes a unique and practical birthday or holiday gift for those interested in precision tools or novelty stationery.4.Accurate Precision: The 1. 0mm precision caliper measuring pen allows for accurate measurements making it a valuable tool for crafts DIY projects and professional use.5.Convenient and Portable: This vernier caliper ballpoint pen is compact and easy to carry making it a handy tool for quick measurements on the go whether at home school or work. Specifications: Material: Plastic Length: 15cm Weight: 8g Notice:1.Actual color may be slightly different from the image due to light effect.2.Please allow 1-3cm deviation due to manual measurement. includes: Choice 1-2: 1 * Ballpoint Pen 1 * Pen Refill or Choice 3: 1 * Ballpoint Pen 2 * Pen Refill