This small phenolic knob puts the perfect finishing touch on your amplifier or other project. Fluted vintage design measures 0.5 diameter (at base slightly tapering toward the top) x 0.62 height (12.7 x 15.8 mm). Set screw for use with 6 mm shaft; white indicator stripe. Small Phenolic Guitar / Amplifier Knob 0.5 - Black This small phenolic knob puts the perfect finishing touch on your amplifier or other project. Fluted vintage design measures 0.5 diameter (at base slightly tapering toward the top) x 0.62 height (12.7 x 15.8 mm). Set screw for use with 6 mm shaft; white indicator stripe. Maybe you re repairing restoring or hot rodding an existing guitar amplifier or other electronic equipment. Perhaps you re devising your own unique musical or audio gear from scratch. Any way you slice it Parts Express has the quality components you need to finish the job right at prices you can afford. Product Details BrandParts ExpressPart Number240-2212UPC848864029498Unit of MeasureEachWeight0.05