Text：180，000 times TUV Fatigue test，very safe. Application：Suit for trap door hinges Bed Large Outdoor Box Lid Trap Door Close problem：If you feel it's too hard to close and you have a lot of flexibility in the mounting position, you can move the mounting point on the lid towards the hinge. Package：gas spring x2，Accessories x4. Supprt：If you have any questions about the product, please contact us 38cm 100N Home 15inch 22.5lb gas struts shocks gas shock lift supports lid support gas spring suit for trap door hinges Bed Large Outdoor Box Lid Trap Door A Set of 2 with L Mounts