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Due to a cyber attack on Royal Mail's International service hub in February, Airmail services are currently taking slightly longer than normal. For time-sensitive orders please consider using a FedEx service. - more info
The 4H lead grade falls in the 7th position of 22 on the widely recognized 10H-10B scale (H=hard, B=black). 4H is a moderately hard lead grade, for creating light, fine lines. Great for technical drawing and outlining.