I recently bought some 19mm and 22mm 'Horotec' shoulderless spring bars from an eBay seller and am impressed by the quality.

He does have any 18mm ones though and a Google search isnt bringing up anything.

Two questions:

1. Does anyone know a good (preferrably on line) supplier that would have these?

2. Any recommendations for superior alternatives and where I might get them

Thanks!
Ian