Advanced Music Products (AMP) is a division of Advanced Plating Inc (API). Manufacturing products for the titans of the industry. Made in the USA for over 60 years. OEM fit and finish. Trust the brand your favorite brand's trust. The near impossible to find is now possible. Get in on this limited edition run before the JuJu runs out. Includes four Voodoo bell knobs and a Voodoo toggle switch washer. Black with Blood Red lettering. To be used with splined shaft pots. Acrylic knobs. ABS hot stamped toggle washer.