Detailed Product Description 1. Furniture Gas Spring / Gas Lift / Gas Cylinder / Gas Strut for beds, seats , tractor, cabinet , roof boxes, fitness equipment , vehicles tailgates2. Size: 04/12 , 06/15 , 08/18 , 10/223. Surface: Black /Chrome / QPQ4. SGS BIFMA X5.1 5. OEM Service / ISO9001 Certificate