These easy-to-hold large nuts and bolts are made from sturdy plastic and are very durable for classroom use. Ideal forchildren to develop fine motor skills, as well as learn about colours, shapes and numbers. \r\nSet includes:\r\n\r\n32 nuts & bolts and\r\n12 durable plastic activity cards.\r\n\r\nNuts and bolts measure 60mm and come in 4 shapes and 4 colours. Activity cards measure 21cm x 24cm.\r\nAges 18+ months