KAISH 2pcs 63/64"(25mm) Diam. Aluminium Potentiometer Knobs 1/4" Universal Metal Pot Knobs for Guitar/Bass/AMPS Amplifier/Power Amplifier/Preamps/Audio Equipments Silver with Blue Rubber o-ring

Grid design with rubber o-Ring. Universal knobs to fit Guitar/Bass/Amplifier/Preamps/Power Amplifier or other Audio Equipments with 1/4" shaft potentiometers. Set screw can help you lock the knobs into position with no possibility of falling off. The set screw is in the body recess, so screw it in place before putting the rubber o-ring in its place