Effectively solve problem of springs weakness when heavy load and improve performance of shock absorbers Improve driving comfort and more stable during curve corner Reduce pumping of absorbers when passing through road hump or yellow line Reduce noise and vibration during traveling. Protect shock absorbers and suspension system to avoid oil leak. Improve braking efficiency Size for all type of car including lowered spring and adjustable Material: high quality rubber Suitable models: 99% car can be used How to use: Jack up the car, till the spring be extended totally; clean the spring and then spray some water or oil on it for easy installation; install the shock absorbers There are 9 specifications to choose from. 1. Spring spacing: 60mm, colloid height: 90mm 2. Spring spacing: 47mm, colloid height: 80mm 3. Spring spacing: 38mm, colloid height: 72mm 4. Spring spacing: 34mm, colloid height: 62mm 5. Spring spacing: 32mm, colloid height: 60mm 6. Spring spacing: 27mm, colloid height: 50mm 7. Spring spacing: 22mm, colloid height: 43mm 8. Spring spacing: 17mm, colloid height: 38mm 9. Spring spacing: 13mm, colloid height: 36mm Product without packaging weight: 495g/325/190g/110g/115g/140g/490g/225g/305g Color: transparent color Material: Silicone Quantity: 1set Packing list: 1 pair of car shock absorber buffer rubber Only the above package contents are included, other products are not included. Note: Reflection of light and different monitors may cause the item's color to be slightly different from the actual item. Measurements allow +/- 1-3 cm.