very good
These are actually about as good as they can be, Viton O ring makes me feel good about fuel resistance.
the fluid path looks pretty smooth and optimized, nice conical transition from threaded body to stem I.D. without compromising the stem structure. wide cross section on the hex makes for happy wrenching and the anodized surface coating seems pretty scratch resistant.
overall very happy, wish they were available in 9/16-18 to 3/8 barb though

