To tighten or not to tighten the valve stem nut?
Valve Core Tool by PRO BIKE TOOL
Tire valve stem core removal tool. DIY
Tire valve stem repair!!!
Pneumatic Components Ltd (PCL)
Tire valve stem core removal tool. DIY
Dynaplug Pill Tubeless Tire Repair Tool (Blue) - Performance Bicycle
Do not fit metal dust caps to your tyre valves
Using A Valve Core Gripper