A Laverda Stainless Steel 6mm Rose Joint. As you may know these things cost an arm and a leg even the non stainless type. For a short period we are able to offer you the stainless type for the normal non stainless price.   These joint have a 6mm right hand thread, the ball eye is also 6mm, they are a direct replacement for all the joints on the original Laverda rearsets  for all models, 500 to 1200.