1.1mm Mechanical Pencil Lead Refill.Fits All 1.1 Automatic Pencil. 500 Mechanical Pencil Lead In One Plastic With 2 Easy Carry Tubes.So Many Leads Can Be Used For A Long Time. Made of Premium Resin.2B Black Lead Refills.Writing Smooth and Clear. Length 9cm(up to 3.54inch), Very Durable. Ideal for home , office , school , taking tests, drawing and general writing, Etc