Samsung Factory knob fits Gas stove models  #NX63T8111SS -  #NX6OT8511SS - NX60A6311SS - NX60A6511SS - NX60BB871112 - NX60A6711SS FACTORY BRAND NEW 1 knob Direct from Samsung FACTORY knob  these are not knockoffs or after market cheap/. heavy duty  please check your model number before purchasing/ask any questions before buying thanks