Features: Stable Operation: The engraving pen features a design that holds steady during use, eliminating jumping or shaking for precise engraving results. Enhanced for PRECISION: With high concentricity and a built-in pen core, this engraving pen has a small vibration amplitude that contributes to more stable and accurate engraving outcomes. Versatile Performance: This pneumatic engraving pen is capable of efficiently engraving on a wide variety of materials including glass,metal, and plastic, making it a versatile tool for various applications. for Durably Tip: Constructed with an alloy steel pen tip, this engraving tool is designed for and durability,it withstands the demands of frequent use. Compact Design: The miniature size of the engraving pen allows for easy handling and maneuverability, making it suitable for detailed work and tight spaces. Specifications: Product Name:Engraving pen core Color: Silver Material: Metal Package Contents: 1 x Metal lettering pen Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.