Product description:Cylinder finishing : Autophoretic Rod finishing : Nitriding process Cylinder diameter : 15 / 18 / 22 / 25 / 27 Travel pole diameter : 6 / 8 / 10 / 12 / 10 , 12 , 14 , 16 L (Install distance): According to customer’s requirement S ( stroke length ) : According to customer’s requirement End fitting form : According to customer’s requirement Pressure : 100N- 1200 N ( 10 KG- 122KG) Brief introduction:Balance gas spring has another name that is Free-stop gas spring, this type of gas spring can be blocked in any position without any other device, and can be released with a little force of compressing or extending. It can be widely used in office furniture, LED monitor, medical equipments and so on. Packing:A , 1 piece in a plastic bag . 10-30 pieces/carton. B , as customers 's requirement . Our advantage:1, We have engaged in automobile gas spring producing for 7 years . now , our products branch into more wider fields and still keep the high quality as usual . 2, We have a professional R & D team and own several patented products . If you have any problem in technology of gas spring , please contact us without any hesitation , we will provide the perfect service to you . 3, It is only 50 minutes range of driving from our factory to Shanghai Pudong International Airport , Welcome you to take a visit and cooperate with us.