Push-button as umbrella cap and barrel with sealing ring for maximum all-round protection against external influences.

• Extremely sustainable thanks to refillability 
• Its FOR ALL graphite lead 2B marks on almost any surface, whether dry, wet, glossy, rough or dusty 
• Most versatile capabilities due to special leads: for bright or dark surfaces, in water soluble or water jet resistant
• Wipe clean from glossy surfaces with a damp cloth
• Barrel with roll stop
• Convenient quiver cap with special clip for perfect one handed handling 
• Patented: The integrated sharpener in the quiver cap - always and immediately at hand 
• High value push mechanism for automatic lead feed in a stainless steel tube 
• Leads most easy to refill from the back end 
• Its graphite lead for Joiners in special hardness H is ideal for fine markings on dry surfaces 
• The water resistant Summer leads is stable up to 70° C