Boost early counting skills with nuts and bolts kids can’t wait to get their hands on! Children just choose a bolt featuring a numeral from 1 to 10 and twist on the matching numberof nuts building fine motor skills as they learn! Each bolt is designed to hold the exact quantity of nuts so kids get no-fail counting practice every time. Plus, the molded plastic nuts and bolts feature a quick-release design that makes it a cinch to remove the nuts and start again. Set includes 10 bolts and 55 nuts; longest bolt measures 19.05 cm