Stop wasting time sharpening pencils and never run out of lead with Paper Mate Mechanical Pencil Lead Refills. With less breakage and no sharpening required, the HB lead is perfect for the classroom. What’s more, the thick 1.3mm cores are ideal for youngsters just learning to write. These mechanical pencil refills are designed to quickly refill your Paper Mate Mates pencils and other 1.3mm mechanical pencils.