Ink Color Silver Material Stainless Steel Package content: you will receive 2 pieces of tungsten carbide scribers and 10 pieces of carbide replacement tips Suitable tungsten pens. Enough quantity can meet your daily use and share with your friends. High quality: these glass engraving pen are made of sturdy aluminum alloy and the tip is made of quality tungsten carbide , super sturdy and durable. With strong hardness and tear resistance, the engraving pens can provide you with long-term service. Considerate design: with ergonomic handle and anti-skidding pattern , you can hold the marking scriber firmly and comfortably. With pen clip design, you will no longer worry about losing scriber pens. Just clip it on your clothes pocket. Function magnetic: There is a strong magnet at the end of the tungsten carbide tips, which can easily adsorb iron bonds when engraving and help you work more efficiently. Wide application: Our scriber can be widely applied to draw sharp lines on stainless steel, hardened steel, glass, wooden board, metals sheet, plastic sheet, etc. These are practical tools for the engineer.