NEW Hipshot O-Ring Guitar & Bass Control Knob for 6mm Split or Solid Shaft BLACK P-M A revolutionary machine head

P-M A revolutionary machine head combines the functions of HAP (Height Adjustable Post) and MG (Magnum Locking)

When overdriven

These are a drop in replacement making for a quick and easy install

they are responsive and growly

the SuperTone gives you a full range of intuitive adjustability and excellent tone transference without any modifications to your bass whatsoever

NEW Hipshot O-Ring Guitar & Bass Control Knob for 6mm Split or Solid Shaft BLACK P-M A revolutionary machine headPrecision machined with rubber o rings, offers a no slip grip. For split shaft and solid switch pots. Hole diameter of . 242" (6mm), which fits Alpha style potentiometers. Attaches with set screw.