Solid Concrete Block, 6" W X 8" H X 16" L

Concrete blocks, also called cinder blocks and cement blocks, come in a wide variety of shapes and sizes. They are made out of a mixture of Portland cement, sand, gravel and water. When the mixture is wet it is paste-like and can be cast into the form of the block. When it dries, it hardens until it becomes like stone.

• 6" wide x 8" high x 16" long solid block
• Sold individually
• 57 blocks per cube
• Meets ASTM C-90 Standards