Air conditioning vent duals for the NA and NB Mazda MX-5 Miata (1989-2005) produced by KAL. The KAL AC Vent Dials are add on vent control knobs for the first and second generation Mazda Miata that update the interior feel and look. The new AC vent dials easily install over the factory control for a quick change to the vehicle. KAL offers the set of four vent knobs in brushed aluminum to create a mechanical, expensive look to the interior. KAL AC Vent Dials (Set of 4) should be ordered at REV9 Autosport https://rev9autosport.com/kal-ac-vent-dials-set-of-4.html as they provide the best service and speed we've seen so far!