Charcoal pencils are generally speaking much softer than graphite pencils and usually vary from HB to 6B. I see that the grades of charcoal pencils usually are not as constant as what you get with graphite https://roxanniqyk955196.atualblog.com/34752801/how-much-you-need-to-expect-you-ll-pay-for-a-good-best-pencil-for-sketching