280mm and fixed joint: the iron gas spring stretches 250mm, bends 190mm, the total length is 280mm, the piston cylinder of the toy box jack is connected to the connecting rod and has a forced hydraulic fixing.The whole process installation of the furniture jack provides excellent cushioning and sealing without gas leakage. The quality guarantees a good sense of use.This gas-assisted metal mounting plate is very strong, does not bend, has a large contact surface with the case and is positioned at three points. Our gas struts come with fittings and screws at both ends. You have not purchased any additional accessories.80N and 80N hydraulic support mass. The 80N gas spring has strong bearing capacity and solid fixing, and does not require much strength to move up and down. Note: It can only be used for objects weighing up to 8 kg. When supporting the door, the supporting weight can only be 4-6 kg.Noise-free applications and furniture The gas lift is suitable for supporting a variety of aluminum or wooden doors and door frames, as well as cabinets, cupboards, TV/bookcase cabinets and more. With this pneumatic arm, the door can be opened or closed slowly, reducing shock without making noise.Note: You can choose N-type pneumatic arms (80N-120N) with different specifications depending on the weight of your furniture.