Camco's bushings reduce the ball mount hole size from 1-1/4" to 1". Variation in hitch ball holes require bushings to adjust for the variation of hitch ball shanks. Solidly constructed of powder coated carbon steel. Reduces ball mount hole from 1-1/4" to 1" Variation in hitch ball holes require bushings to adjust for the variation of hitch ball shanks Constructed of powder coated carbon steel