The product is a pair of rear suspension coil springs designed specifically for the Nissan X-Trail T31 model from 2007 to 2013. These springs are suitable for vehicles with standard suspension and are made by the manufacturer with the reference OE/OEM numbers RA6138 and 55020JG20A. The springs are designed to fit on the rear left and right sides of the vehicle and are compatible with engine sizes 2.0, 2.5, and 3.0. As a genuine replacement part, this product ensures a smooth and comfortable driving experience for Nissan X-Trail owners.