Density Rods Set, Comprising 12 cylinders of different material and of different lengths (38mm - 60mm) but of same diameter 12.5mm.
All density rods are placed in a square shaped wooden block. Copper Rod, Brass Rod, Acetyl Rod, Rubber Rod, Acrylic Rod, Aluminum Rod, Polypropylene Rod, PVC Rod, Nylon Rod, Oak Rod, Maple Rod, Walnut Rod.