This LEGO Technic Bucket Wheel Excavator (42055) is an impressive set with 3,929 pieces that will provide hours of building fun. This set is perfect for LEGO enthusiasts who are 12 to 16 years old and comes with a variety of features that make it a great addition to any collection. The set includes a bucket wheel excavator that measures 6.7 inches in height, 22.9 inches in length, and 18.9 inches in width. It also includes a variety of LEGO Technic pieces that allow builders to create a realistic model. The LEGO set is perfect for those who love building toys and is categorized as both a LEGO (R) Complete Sets & Packs and LEGO (R) Building Toys.