Our 1/4" and 5/16" Leather welt/sidewelt is a straight edge. These are for boots/shoes and not for upholstery use.
1/4" is smaller than 5/16" see photo above to comparison.
Standard comes without cord but we can make it with cord for your liking.
We do not stock all colors but sometimes we have them already made; regardless we will let you know if we do or not.