Pentel Super Hi-Polymer Lead Refill, 0.5mm, Fine, 2H, 144 Pieces of Lead (C505-2H) #1 selling lead in the world Each tube of Pentel Super Hi-Polymer lead is made of 100% recycled plastic and part of the Pentel Recycology line of products Never needs sharpening and produces a clear, dark line Ideal for all general writing applications such as notes, letters, etc Refill Fits all 0.5mm mechanical pencils