These are Tamiya Extra Hard On-Road Springs.
These springs go on the shocks of the car.

FEATURES: These springs are white in color
The damper strength on these springs is Extra Hard

INCLUDES: Two shock springs

REQUIRES: Installation onto shocks

SPECS: Height: .81" (20.6mm)
Width: .65" (16.4mm)

COMMENTS: Usable with cars containing part number 53571; and TRF414M-WRC, TB-EVOIII, TA04-TRF SPECIAL