Boost early math skills with nuts and bolts kids can’t wait to get their hands on! Children just choose a bolt and twist on the nuts, matching numbers to quantities through 10, Creating patterns or sorting bu colour and building fine motor skills as they learn. Plus, the molded plastic nuts and bolts feature a quick-release design, so it’s a cinch to remove the nuts and start again! You get all 3 sets shown; longest bolt measures 19.05 cm. Each set also available separately.