Sold individually, these Kahler riser wheels level the front of your bridge while the 9468 Mounting Studs act as rear levelers. It gets threaded into a 9491 Riser Wheel Anchor.
Fits all stud mounted 6, 7, 8, 9 and 10 string Kahler stud mounted tremolos including the 22xx Pro, 4200 X-Trem, 7200 Hybrid and the Gibson stamped Super-Tune.