Sakura Cray-Pas® Junior Artist™ 50-Color Oil Pastel Set. Cray-Pas® Junior Artist™ puts the power of beautiful and blend-able color into young hands. It is no wonder that Cray-Pas® is used in schools nationwide to teach and practice art techniques. Invented in 1925 by Sakura Color Products Corporation, it is probably the most "basic and acceptable art material" in the elementary school market today. Cray-Pas® oil pastels can create oil paint effects, are easy to hold with their round shapes, will not peel, crack or flake, are easily blend-able and are safe for children. Great for drawing, lettering, scratch art and long-lasting sidewalk art. Cray-Pas® are excellent on paper, cardboard and canvas. 8 mm diameter x 60.8 mm length.