Everything seems to be fine. Suitable for HZXVOGEN 200A clapper gun diffuser. When removing or attaching the nozzle, always turn it slightly to the right so the coil of the spring decreases in diameter, making it easier to slide and attach (I've noticed that some welders got confused trying to wrap around the nozzle gain weight). turn off and turn on again. I know you might think there's some intuition, but alas.). Good price. good to go