Whitney Brothers Hardwood Unit Blocks - Builder Set

Our blocks are the best you can buy--and we have a 50-year guarantee to prove it! As children design and build using our classic Hardwood Unit Blocks, they learn problem solving, perception skills, even basic math and science. Blocks are made of solid hardrock maple, klin-dried, sanded and bevelled for perfect building balance. And if any block breaks or splinters within 50 years from date of purchase, we will replace it at no charge! Each block is precisely related in size to the basic unit block (1 3/8" x 2 3/4" 5 1/2") for a comfortable series of relationships that makes it easy for children to create and learn.

Builder Set includes 193 blocks in 24 shapes.