Works with only 5 box models: Store It Out Max 1200L / Store It Out Arc 1200L / Store It Out 1200L / Elite Store 1150L / Premier XL 1150L Pressure force 140N ensures that the lid of the garden box stays up and opens almost automatically. After a few years, temperature fluctuations and weather conditions, the original-gas lose their strength, so it may be necessary and sensible to replace them with . We always recommend replacing both gas at the same time so that the lid is always evenly loaded and there is no tension on the flap. Strength per gas pressure lifter . 140N - enough for the lid Colour:As Shown Material:Metal Package Contents: 2 * Garbage Can Box Lid Hinge Support Gas Strut Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.