JKQ Characteristics???The series product can lock at anyposition during the running. There is ejection rod in the end ofthe piston, and the inside valve will be turn on to flow the gas oroil when push the ejection rod, and the lockabled gas spring canstretch easily as Compressed Gas Spring. When it moves to requiredposition, the inside valve is be shut off after the ejection rodrelease, and the piston will be locked accordingly. The gas springafter locked can bear large load, but if it is overloaded, the lockfunction will not work.