Large wooden (beech wood) wrecking ball toy truck with plastic parts teaches children about simple machines: pendulums. Removable trailer with large wooden crane. Designed to be used with Unit Blocks–Unit Blocks not included. Crane rotates so a child can align the wrecking ball with their unit block structures, and articulating trailer allows the truck to make sharp turns. Educational benefits: Spatial reasoning, early engineering concepts and the mechanics of simple machines, social-emotional benefits including cooperation, sharing, language and self-expression. Suggested Age: 3+. Dimensions: 18”H x 5.5”D x 16.75”L