Sax Midwest Products Project Woods Balsa Economy Bag, Assorted Sizes The Sax Balsa Economy Bag contains 1/2 board foot of light-weight balsa in various shapes and sizes. Pieces in the bag generally differ in length from 5 to 8 inches. The larger pieces are ideal for carving while the strips and planks are perfect for constructions and sculpture. Unique and fun art classroom supplies that beginner and expert artists will love Pieces generally vary in length for the ability to make a multitude of creations The perfect tools for your back to school carving unit