The marker pen is ideal for hard-to-reach places. Allows deep markings in mounting holes. Metal cap. Body and clip. to ensure durability and strength for professional use. Automatic core ejection: with one push of a button, the core is pushed out by 2 mm. Practical. because it is always at hand. The sharpener is integrated into the push button. allowing very precise markings. Strong clip for hooking onto shirts or trousers. The core is easy to change: unscrew the button. Insert a new core. Screw the button back (the colored lead is already sharpened before insertion). Suitable for writing or marking on all types of surfaces and materials (dusty. rough. smooth. greasy. wet. etc.). One graphite core is included.