Silent-blocks (or anti-vibration mount) are perfect for mounting gas tanks, oil tanks, battery boxes, all kinds of electronics and many other custom applications to insulate them from vehicle vibrations. This anti-vibration mount with two 1/4"-20x1/2" studs replaces the OEM 62563-65 rubber/stud mount as used for mounting the oil tank and battery box on many Harley-Davidson models. Sold each.