These clickable colored pencils have no pencil shaving mess so it is nice to just click the top to advance the lead and if you end up with too much you just click again and hold the button down while pushing back into the pencil. The smooth creamy texture of these colored pencils makes them glide on easy to blend and layer creating beautiful works of art. These color pencils offer vibrant color and rich pigment with saturated and delicate color vitality. With a 36 count colored pencil set you will have endless possibilities for artistic expression. The lead of these colored pencils is 2.6mm and adopts anti segmental bonding technology so the lead core is not easy to break. These coloring pencils come with a case easy to take with you and great for traveling. The included sharpener has a waste bin so you can sharpen pens without dirty hands and clean up easily. The hexagonal barrel offers a comfortable grip for long time immersive drawing. These colored pencils are for fine detail drawing as well as blending shading and layering.