BA7NID Use a needle-nose pliers or a "card簧" clamp to open it and hold against the inner wall while turning it out.
BG2EWI Regarding a stripped screw that's broken inside the hole, here are some possible solutions: try using needle-nose pliers to carefully grip and remove it. If that doesn't work, use a hard object to gently push it out from the other side.
UmenShiro First, remove the outer shell. Then, use something to secure it and slowly turn it out using a clamp.