LYRA Super Ferby Nature Colouring Pencils Box of 12 Lyra Super Ferby Pencils are a longer version of the popular Ferby, and feature a thick 6.3 mm lead similar to the Colour Giants from Lyra. With thick, highly pigmented leads that have lovely rich colours, the Super Ferby pencils have a triangular barrel which sits comfortably in the hand. Thick, 6.3mm lead gives great coverage and moves smoothly on paper. Particularly good for young children of people with fine motor skills, gripping problems or arthiritis.