I-self-lock igesi yomthombo yenye yemithombo ye-gas strut, eyandisa isixhobo sokutshixa ngesiseko se-sprut ye-gas strut. Xa i-gas spring ixinzelelwe kwi-shortest, inokutshixwa ukugcina imeko yoxinzelelo. Ukuvula umthombo wegesi kufuneka nje ucinezele phantsi, kwaye umthombo wegesi ubuyela kwimeko eyoluliweyo ngokwemvelo.