Product Summary
Includes 12 springs (1.6 cm diameter) with approximate spring constants of:
3.4 N/m (3 short and 3 long springs)
6.8 N/m (3 short and 3 long springs)
3.4 N/m (3 short and 3 long springs)
6.8 N/m (3 short and 3 long springs)
WARNING: CHOKING HAZARD!
Small parts. Not for children under 3 years.