Order received after 7 days. Good packed. Air spring rubber seems good quality, o-rings, shock top rubber and pressure valve also.Only the 4 screws that came along are not so good, i recomend to put the originals back. Center tube of air spring is plastic (Originally have steel),that's why it's so cheap, but it's not bad, its thick. Air spring have installed, its fit very nice. Car stay up in position, where its need to be. No leaks from air spring. Let's see how long it lasts. If i need another air spring i will by here. I recommend this seller and product.