Jonti-Craft® Abel Block SetA block set especially designed for toddlers thru two year olds. Four simple shapes of blocks provide the sturdiness needed to learn to balance the blocks successfully. Block building is a small group activity and this set is assembled for two to three children. Constructed of hardwood, edges rounded and sanded smooth. Based on the precise unit size of 2. 75" wide x 1. 375" thick x 5. 5" long. 154 pieces with 4 different shapes.