Instruct: Classify a given review into positive or negative sentiment.
Query: danegerous design

This fitting F276140 is designed VERY DANGEROUSLY, in that it lacks the center sealing sleeve and an o-ring, and relies solely on a thin rubber washer-like seal in the appliance to make a high-pressure seal (all other similar couplers have a center sealing sleeve and an o-ring in the center).Additionally, in the unit I got the brass sealing surface was scuffed up, and the threads were cut very rough.Overall, a piece of dangerous junk, especially if used without a flow-limiting device that would activate in case the thin rubber on the appliance side cracks and blows.