This is the Rokenbok® Inventor's Kit / Suitable for Ages 8 & Older / / FEATURES: This kit is a collection of the special-use, custom blocks. These / building pieces enable builders to improvise with drawbridges, / block-and-tackle, elevators, custom trailers, treadmills and / diagonal construction using 30° angles, 60° angles, pulleys, / hinges, swivel blocks, tow hooks, wheels and axles, and single / snap blocks. / Expanding a set is easy...all Rokenbok® sets work together! The / plastic beams and blocks snap together with every other Rokenbok® / building piece, including the special-use, custom blocks! / / INCLUDES: 161 Pieces / / REQUIRES: Assembly