Mitsubishi Pencil 85th Anniversary Commemorative, Not for Sale, "Jumbo Uni" Pencil 3-Piece Set. The jumbo size is 1.5 times the size (thickness) of the regular size. As a bonus, we will include 12 regular-sized Hi-uni (HB) pencils. Please note that the regular-sized pencils have an engraving that looks like a person's name, but please be understanding.