Product Name: Auto Stainless Steel Gas Spring Model NO.: s.s Damping Force Direction: Bidirectional Structure: Single Cylinder Spring Material: Steel Spring Type: Air Spring Type: Hydraulic Position: Rear Part: Air Spring Product Description Products Information:1, Different gas springs for auto parts, such as support gas spring, lockable gas spring.2, Different gas springs for office chair3, Different gas springs for house building4, Customer's design