Eagle Racing, 1/10 Unequal Pitch Spring Set Drift (2 each of 5)
A set of unequal pitch springs for 1/10 touring cars/drift cars.
An irregular pitch spring is used to create more efficient shock absorption during up/down movements.
Set includes 5 different types of springs with different tension and can be changed according to the ride.
Inner diameter 0.5 inches (13 mm), length 1.1 inches (28 mm). #3741 ... diameter springs 1.3, 1.2, 1.1, 1.0, 0.9 inches (1.3, 1.2, 1.1, 1.0, 0.9 mm).
Batteries and batteries are not included.
(From Amazon.co.jp)