Inovart weaving looms are durable, easy to use, and a very effective teaching tool. These cardboard weaving looms teach the fine art of weaving to students. Each weaving loom has 4 notches per inch and are made of thick and sturdy 100% recycled chipboard. Choose from the standard narrow notch weaving looms for finer yarn or the "WIDE". notch weaving looms to accommodate thicker yarn.