Original Name / Part No.: 8961Part location: Front or rear dampersProduct major functions & usage: Reduce the friction and absorb the pressure during driving so that the car can be more balanced.Is this part adjustable? If yes ¡¦ how and why/purpose?YESHow: Adjust the top spring retainer.Purpose: To adjust the hardness of the spring damper.Accessories:Damper 2pcsGold Spring 2pcsStainless Steel Round Head Screw 3x18 2pcsStainless Steel Round Head Screw 3x30 2pcs