25 4mm graphite lead products are offered for sale by suppliers on Alibaba.com, of which pencil lead accounts for 44%.
A wide variety of 4mm graphite lead options are available to you, such as lead, refill.You can also choose from mechanical pencil lead, standard pencil lead and color pencil 4mm graphite lead,As well as from hb, b 4mm graphite lead,and whether 4mm graphite lead is set, or loose.