Specifications: These crayons can be drawn on a variety of materials such as plastic bottles and milk packs. The extra thick shaft makes it hard to break. For childhood use only. Arts & Crafts Dowel Crayons Material: Color Shaft: Pigment, Wax, Physical Pigment, Oil; Body Size: φ0.4 x 2.8 inches (11 x 70 mm); Body Weight: 0.3 oz (9 g); Extra Thick Shaft: Clear Label Roll; JAN: 4902506306975; Art Shop Dot Com Postcard A; Limited Product! cute animal