Plain Sycamore is available as .6mm and .9mm thick veneer. We have been selling it as an option to holly. Holly has been hard to get and quite frankly not all that nice a lot of the time. .9mm sycamore is not so easy to come by mostly because it is only sliced in Europe and not alway's available. We try to keep both on hand but I would say that if you like to use .9mm then it is best to buy as much of it as you can when you can, just in case we can't get our hands on some for a while.