Pentel Ain Stein lead is 30% stronger than the competitive average while providing the same darkness and smoothness. Features twist open top. Made with 92% recycled material. Ain Stein's innovative formula uses porous ceramic cell structure while providing the same darkness and smoothness. Features twist open top. 40 refill lead per tube. Lead never needs sharpening and produces a clear, dark line Ideal for all general writing applications such as notes, letters, etc Each 60mm piece of lead is equivalent to a woodcase pencil Part of Pentel's exclusive Recycology™ line of recycled products. Over 50% of the materials used to create these products were recycled materials. Ideal for highly detailed lettering or pencil work. General Information Manufacturer:PentelManufacturer Part Number:C279-HBManufacturer Website Address:https://pentel.ca/Brand Name:PentelProduct Line:Ain SteinProduct Name:Ain Stein Lead Refill (0.9mm), HB, 36 Leads per TubeMarketing Information:Ain Stein's innovative formula uses porous ceramic cell structure while providing the same darkness and smoothness. Features twist open top. 40 refill lead per tube. Lead never needs sharpening and produces a clear, dark line Ideal for all general writing applications such as notes, letters, etc Each 60mm piece of lead is equivalent to a woodcase pencil Part of Pentel's exclusive Recycology™ line of recycled products. Over 50% of the materials used to create these products were recycled materials. Ideal for highly detailed lettering or pencil work.Packaged Quantity:36 / PackProduct Type:Pencil Refill Product Information Quantity Per Container:36 Leads/TubePencil Refill Point Type:BoldLead Diameter:0.9 mm (0.04")Pencil Refill Grade:HB Miscellaneous Recycled:YesCountry of Origin:Japan Product Numbers: C279-HB 4902506269393 PEN26939 564153 PENC279-HB PENC279HB