1,lockable gas spring for kitchen,hospital bed,massage chairs 2,chrome or powder coating are available 3,Force can be changed 1,Material: Steel2,Quality: Airproof and durable3,Chrome or Powder coating are all available4,Packing: 20 pcs/carton or 400-600pcs/wooden case5,Function: It would be adjustable and extendable by force gas spring for kitchen