Kids will enjoy hours of creative play with these time-honored classroom favorite unit blocks. Crafted from hardwood, which is stronger than oak, each block is finely sanded smooth to insure it will be splinter-free. All edges are beveled and corners are safely rounded, which means no injuries and peace of mind. These classically designed blocks are based on the precise unit size of 2�" wide x 1⅜" thick x 5�" long. Special sets and bulk quantities of individual shapes can be ordered, too—give our customer service department a call for a quote!