... motorcycles, machinery,medical equipment, furniture, doors, trunk lids,cabinets,seat / chair etcGas spring is suitable for lift up wooden door and aluminum ... is 60N.80N.100N.120N and 150N.Different power of gas spring is suitable for different weights.Tube diameter: 15mm Rod ... -buit for proper strength based on weght of door panel.Gas spring has been exported to ITALY, RUSSIA, BRAZIL, COLOMBIA, PERU, ...