Best Grade Pencil from Staedtler and Know the Difference (Specially Good for Art)

There are So many models and different grades from Staedtler brand  Let see what's the difference a1nd benefits of each 

1.Mars Lumograph Pencil 100B-HB Box 12 pieces | ST-100B-HB

High quality drawing pencil
Special lead formulation containing a high proportion of carbon for matt, jet black results
High break-resistance through special lead formulation and super-bonded lead
Available in 6 finely graded consistent degrees