pencil lead tube 1.conform to EN71 & ASTM D-4236 2.every pen is checked 3.good for promotional & office use pencil lead tube1)Type:mechanical pencil lead2)Material: PP,ABS,PS3)Our designs are suitable for office,school,drawing,promotion use.4)Meet EN71 and ASTM D4236 standard. All the materials conform to USA or European standards.5)Lead type:refillable 0.5/0.7mm6)Packing: Blister card, PVC bag, ...