Safety pin with o ring for CO2 extinguisher
Every fire extinguisher should have a pin inserted into the handle that prevents the fire extinguisher from being discharged by accident. If there is a fire to extinguish, then grab the ring and pull the pin out from the side of the handle.
Now, the extinguisher is ready to discharge, hold the device so the nozzle is pointed away from you.
This safety pin is a universal pin and suitable for several CO2 extinguishers.