Block play has met its match with our highest quality hardwood block playsets containing more units and double units for greater play value! Each precision-made, straight-grained, kiln-dried, hardwood block has sanded, beveled edges. The Quarter School Wood Unit Block Set contains 161 pieces, including 19 different shapes. The unit block is a standard 1 3/8" x 2 ¾" x 5 ½" size, while all others are multiples or divisions of this size. We know these blocks will stand up to the test with our guarantee that any block breaks or splinters, we will replace it at no charge! Ages 2+.