Product Description: 2.8mm HB RefillsHB hard carpenter pencil refills have good toughness and high hardness, not easy to break, suitable for interface and objects hard or rough such as wood scribing, field drawing, etc. Suitable for most2.8mm standard round silver woodworking pencil refills can replace all refills of 2.8mm, working with most brands of 2.8mm mechanical pencil holder. Wide ApplicationHB silver carpenter pencil refills have a wide range of applications, such as work wood, construction, writing, drawing, sketching, constructions, etc. Convenient containerpush to open the plastic cover to remove the refill, the box has 6 grooves for each carpenter pencil refills, convenient to remove and store the refill and effectively avoid the breakage of the refill. Package Contents4 packs x 6 carpenter graphite refills, you will receive a total of 24 carpenter pencil refills