Designed as direct replacements for Ibanez, Schechter and other contemporary bass manufacturers, Leo Quan’s Badass TK-7818 SGT’s feature a high-tolerance machined brass gear (20:1 gear ratio) for maximum accuracy and minimal slippage. A durable steel worm gear and sealed housing offer maximum longevity. And to make sure they won’t weigh down your headstock, they’ve been given a lightweight zinc housing.