General Compressed Charcoal Stick 6B 2/Pk Go to amazon.com Related posts How to buy the best graphite stick 6b? FeaturePack of 21/4-x-1/4-x-3 inches6B soft hardness DescriptionPackage of 2 square compressed charcoal in 6B Extra-Soft hardness. Sticks measure 1/4 x 1/4 x 3 inches.