Knex Building Fun Tub 300 Pc Build 20 Designsknex Building Fun Tub 300 Pieces 20 Builds Unlock a world of creativity and learning with the knex Building Fun Tub! This 300 piece construction set includes brightly coloured rods and connectors designed for snapping together into a variety of 3D models. Ideal for children aged 7 and up, it features 20 different building ideas such as scooters, choppers, robots, and excavators, all supported by a detailed instruction manual. This set encourages the