1 1/2" Harley Davidson Metallic Black Marble. Silver Harley emblem on a 1 1/2" diameter black metallic finish glass marble. We have a very limited number of these that we bought out of the back of a pickup truck---kind of like you hear about people buying stolen TV's. These are not stolen, but we do not know if they are truly Harley items. $5.00 THESE ARE NOT KNOBS