Tombow Irojiten Colored Pencils, Seascape, 30-Pack High quality wax-based, artist grade pencils Hard and dense lead provides a strong point and holds sharp point longer, requiring fewer sharpening's Dense lead prevents breaking while sharpening Wax based lead produces rich, creamy texture and smooth even blending Easily layer colors without waxy build-up Set includes 30 high quality pencils in 3 color volumes of 10 pencils each 10 of the 30 pencils are fluorescent glow in the dark colors