New knobs has been added to the Sago bass parts lineup. Sago is a Japanese manufacturer that handles many professional guitars and basses! There are three types of lineup: ALCO Style Large, ALCO Style Stack, and JB Style Stack. The ALCO knobs are known to be used on Sadowsky basses. The ALCO knobs gives an impression of a higher grade model. Made of aluminum, it is also lightweight. If you are specific for knobs, pls check them out! JB Style knobs has a stack pot with a jazz-based design. Even with active pickups with 2-axis double pot on the Juzz bass, it won't destroy the conventional appearance. Both are millimeter-specification and horizontal screw types, and are compatible with various models.