The main part is composed of two parts: roller and reed. The principle is that the spring drives the drum to rotate, and when the drum passes by the reed, it will flip the reed and make a sound.
Material: greenwood, metal accessories
Type: STEM toys, DIY kits, physics kits
Suggested Age: 6 years and up
Package: PE ziplock bag*
*Some orders are individually packaged in cartons, but this is not guaranteed.
Note: this is a DIY kit, you need to assemble it
WARNING: CHOKING HAZARD - Small parts. Not for children under 3 yrs.