These medium light 14K yellow friction ear nuts are for when every penny counts. There are even lighter ear nuts sold in the marketplace so these are considered medium light in the world of ear nuts. We sell these as they are the best we have found in an economical 14KY friction ear nut. They will only fit the thin post diameter 0.76mm (.030"). Use with our 14ky earposts 200-849PO, 200-852PO & 200-804PO.