these are knobs that can be used on superstars ....cobras .....and any more cb radios    they have not been used   these kind of knobs now are getting harder to find  ..... these knobs are as i got them from the shop   in the usa ...they a tight fit on the shaft these no D clip with them ........i having a clear out of items i dont need any more  .........sorry lads cant drop price as i got post and listing price to pay