These brass orifices are a specific replacement for the JennAir SVD4860P stoves that use hooded orifices to convert from natural gas to propane (LP). Many cooktops, free standing stoves, bar-b-ques, and rangetops use these types of orifices and they will retrofit a number of other units which use burner assemblies with mixer tubes that fit over these types of orifices, so please view my video link to see how to verify orifice size fitment for your specific unit:

http://www.youtube.com/watch?v=-FhPVHOZgkQ&feature=youtu.be

This set includes 4 orifices for a stove with up to 4 burners. Many cooktops, rangetops and free standing stoves usually come with a dual gas regulator that can be converted between natural gas and propane. Other manual adjustments might be necessary, so check your factory instruction manual details. No other hardware parts should be required to complete the conversion if your unit uses a dual gas regulator.

These orifices come pre-drilled for two two smaller burners, and two orifices for the two larger burners. International buyers, please inquire about international shipping rates before ordering. FOB origin.