Industrial sewing machine thread #50, set of 8, Ace Crown etc. Used. 5100 This is a used set of 8 industrial sewing machine threads, #50, including Ace Crown. It will be shipped via Kuroneko Compact. Please check the remaining amount in the images. It will be shipped in a simple package using a recycled box or air-filled packaging. The seller will select the best shipping method and type of packaging materials each time, so the buyer cannot specify them. The 4-digit number at the end of the product name is a management number assigned for listing purposes and is not related to the product itself.