Get building with the Off Bits Sky Bit kit. Designed for ages 8 years and older, follow the illustrated instructions, young engineers get to transform this jumbled collection of colorful nuts, bolts, and unique hardware pieces into a helicopter, ready for take off. Includes 98 building pieces. Finished helicopter measures 7.25 x 4.75 x 6.75 inches. A wonderful S.T.E.M.