Clip of magnet aluminum etching engraving pen makes the steel engraving pen easy to carry, so you can clip your pen on your pocket Adjustable tension Center punch, you can use it easily with just one hand, and no other tools are needed, just adjust it to the desired spring tension, press it steadily on the workpiece, then automatic center punch can perform Tungsten carbide scriber is designed in pen shape with a sturdy structure, lightweight, knur aluminum handle, non-slip, easy to hold and control You can use tungsten carbide scriber to mark clear lines on many kinds of hard materials, such as glass, metal, wood, ceramics, jewelry and more With 2 types of automatic center punches, you can choose according to your needs Description: The alloy marking tool has a tungsten carbide tip and an aluminum body so that it can easily handle hard materials, including hardened steel, stainless steel, ceramics and glass.The center punch is made of high speed steel, and the brass case is cast with chrome-plated tip to withstand strong impact. Widely used in etching and engraving;You can use them to draw clear lines on a variety of hard materials, including metal, wood, stone, jewelry, etc. note: Manual measurement, please allow slight errors on size. The colors may exist slight difference due to different screens. Color: silver, gold Size: about 13CM long Package Including 2 * Tungsten Steel Marking Pen 2 * Center Punch