Ajax Scientific 6 Piece Cube Density Metal Set, 20mm Go to amazon.com Related posts Top 12 best density cube set: Which is the best one in 2022? The 13 best density cubes set for 2022 FeatureCube density metal setIncludes aluminum, brass, copper, iron, lead, and zinc cubesSize: 20-millimeters DescriptionAjax Scientific cube density metal set. Available in size 20-millimeters. Includes aluminum, brass, copper, iron, lead, and zinc cubes.